Find the area of a circle with a diameter of 4. How do you find they area of a circle?

Answers

Answer 1

Answer:

The number pie

Step-by-step explanation:

Answer 2
Area of a circle

Find the area of a circle with a diameter of 4. How do you find they area of a circle?

To find the area of a circle use the formula [tex]\large\tt A=\pi r^2[/tex] or [tex] \large\tt A=\pi \times r \times r[/tex]

Where π = 3.14 correct to 2 decimal places, r = radius, and d = diameter. The radius is half of the diameter.

[tex]\tt A=\pi r^2[/tex][tex]\tt A=3.14\times 2^2[/tex][tex]\tt A =3.14\times 4[/tex][tex]\tt A={12.56units^2}[/tex]

Therefore, the area of a circle is 12.56 sq. units

#CarryOnLearning

Related Questions

Find the volume. Answer without units. *
2
4- in
5
3 in
3
16 - in
4

Answers

Answer:

the answer is 221.1

Step-by-step explanation:

The volume of the rectangular prism is 221.1 in³.

What is volume?

The volume of any object defined the capacity of it, how much it can hold something is called its volume.

Given is rectangular prism, we need to find the volume of the same,

So, we know that the volume of a rectangular prism is the product of its dimensions.

V = length × width × height.

[tex]V = 16\frac{3}{4} \times 4\frac{2}{5} \times 3[/tex]

[tex]V = \frac{67}{4} \times \frac{22}{5} \times 3[/tex]

V = 4422/20

V = 221.1

Hence, the volume of the rectangular prism is 221.1 in³.

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6x-4(3x-5)=2 solve for x.

Answers

Answer:

x = 3

Step-by-step explanation:

6x -4(3x-5) = 2

6x - 12x + 20 = 2

-6x = 2 - 20

-6x = -18

x = 3

I'll mark you brainliest if your correct​

Answers

Answer:

The answer is 7

Step-by-step explanation:

on the graph number 6 is spun at 7

ѕєє thє híght σf вαr αt 6!! whαt'ѕ thє hєíght? σвvíσuѕlч ít'ѕ 7

í hσpє чσu gєt ít :)

find the angle sum of polygon which had 9 sides​

Answers

Answer:

1260°

Step-by-step explanation:

Number of sides was given as 9, hence ( n= 9)

Sum of interior angle of a polygon can be determined using the expression below

[(2n-4)90°]

Substitute n=9

[((2×9) -4)) ×90]

= [(18-4)×90]

(14×90)=1260°

Hence, angle sum of polygon which had 9 sides​ is 1260°

write the equation of an exponential function that passes through the points (2,48) and (5,750).

Answers

Ok, so the function form is y = a * bx.
Substitute in the values:
750 = a * b5
and
48 = a * b2
Then divide the two equations:
750/ 48 = (a * b5) / (a * b2)
So:
15.625 = b3
Take the cube root of both sides:
2.5 = b
Now, substitue b into one of the equations (the one with 48 has smaller numbers and is easier to work with.)
48 = a * 2.52
Simplify.
48 = a * 6.25
Divide both sides by 6.25
7.68 = a
Now substitute in a and b to write the exponential function:
y = 7.68 * 2.5x

The equation of an exponential function will be y = 7.68 × 2.5ˣ.

What is equation of line?

The equation of line with slope m and passes through the point (x₁, y₁) is calculated as;

y - y₁ = m (x - x₁)

Given that;

An exponential function passes through the points (2, 48) and (5, 750).

Now, The exponential function is;

y = abˣ

Where, a and b are unknowns.

Hence, For the point (2, 48), we get the equation;

48 = ab² .. (i)

And, For the point (5, 750), we get;

750 = ab⁵   .... (ii)

Solve the equation (i) for value of a, we get;

48 = ab²

a = 48/b²

Substitute in equation (ii);

750 = ab⁵

750 = (48/b²) b⁵

750 = 48 b³

b³ = 750/48

Take cube root both side;

b = 5/2

Hence, a = 48/b² = 48/(5/2)²

a = 48 × 4 / 25

a = 7.68

Thus, After substitute the value of a and b we get the exponential equation as;

y = 7.68 × 2.5ˣ

Therefore, The equation of an exponential function will be,

⇒ y = 7.68 × 2.5ˣ.

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Tom has a 15 pounds bag of cat food. If he feeds his cat 1/4 pound
of food each day. How many days will the 15 pound bag of
cat food last? Show your thinking.

Answers

Answer:

it will take his cat 60 days to finish the entire bag

Step-by-step explanation:

Can somebody plz help me with surveys in math?

Answers

What are the surveys??

Arc CD is [tex]\frac{2}{3}[/tex] of the circumference of a circle. What is the radian measure of the central angle?

a.) [tex]\frac{2\pi}{3}[/tex]
b.) [tex]\frac{3\pi}{4[/tex]
c.) [tex]\frac{4\pi }{3}[/tex]
d.) [tex]\frac{3\pi}{2}[/tex]

Answers

Answer:

b

Step-by-step explanation:

Find sin x, sin z, cos x, and cos z. Write each answer as a simplified fraction

Answers

Answer:

sin x=55/73

Sinz=48/73

cosx=48/78

cosz=55/73

Step-by-step explanation:

Using SOHCAHTOA

Please answer correctly !!!!!
Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

4:6 I think sorry if wrong

Step-by-step explanation:

Answer:

2 to 3. Or 2:3

Step-by-step explanation:

There are 4 triangles to every 6 squares

Their GCF is 2 so divide by 2 to get 2:3

351 students in 27 classes _____ students in each class

Answers

Answer:

13

Step-by-step explanation:

351 divided by 27 = 13

If there are 351 students and 27 classes, there are 13 students in each class.

351 divided by 27 = 13

Given cos x = 3/5 and 3pi /2 < x < 2 and sin y = ─ square root 2/2,
and < y < 3pi /2; evaluate tan (x ─ y).

Answers

Answer:

Step-by-step explanation:

La ecuación de la recta que lasa a través de los puntos P1 (2,5) y P2 (4,11) es: a) 3x+y+1=0 b)3x-y-1=0 c) 3x-y+1=0

Answers

Respuesta:

3x-y-1 = 0

Explicación paso a paso:

La forma estándar de ecuación de una línea se expresa como y = mx + b

M es la pendiente

b es la intersección con el eje y

Dada la coordenada P1 (2,5) y P2 (4,11)

Pendiente m = y2-y1 / x2-x1

m = 11-5 / 4-2

m = 6/2

m = 3

Sustituya m = 3 y (2,5) en y = mx + b

5 = 3 (2) + b

5 = 6 + b

b = 5-6

b = -1

Obtén la ecuación

y = 3x-1

Igualar a cero

y - 3x +1 = 0

Multiplicar por -1

3x-y-1 = 0

Esto da la ecuación requerida

AHahahaahhahhah please please help no links please

Answers

Answer:

45

The scale factor is 9

So, 5 x 9 = 45

8x-10=x^2+5 solve using quadratic

Answers

using the quadratic formula
x = 5 , 3
two solutions

Answer:

x=5,3

Step-by-step explanation:

What is the value of x?

Answers

Answer:

The answer is 25.1 or just 25 which ever way they are asking for it

Step-by-step explanation:

Hope that helps

FYI you just need to use the Pythagorean theorem to solve this

A^2 + B^2 = C^2

Select all of the following answer choices that are reciprocals of each other.
A. 2 and 1/2
B. -5 and 5
C. -7 and -1/7
D. 3 and 4

Answers

C is the answer. Hope it helps

what is 4(11h +3g)?????

Answers

Answer:

[tex]12g+44h[/tex]

Step-by-step explanation:

Step 1: Rearrange terms

[tex]4(11h+3g)\to4(3g+11h)[/tex]

Step 2: Distribute

[tex]4(3g+11h)\to12g+44h[/tex]

Answer:

44h+12g

Step-by-step explanation:

Okay, so, this a standard algebraic expanding problem, so:

We take our 4(11h + 3g)

because we have parenthesis, we have to distribute the 4:

4 x 11h + 4 x 3g = 44h + 12g

So, 4(11h + 3g) expanded is 44h + 12g

hope this helps:)

How many fluid ounces are in ​12 ¼ ​cups?


A. 6 ⅛ fl oz


B. 24 ½ ​fl oz


C. 49 fl oz


D. 98 fl oz

Answers

Answer:

D

Step-by-step explanation:

I looked it up your welcome

Are these triangles congruent? If so, state the rule which you used to determine congruence
A. SSA
B. AAS
C. ASA
D. Not necessarily congruent

Answers

Answer:

not necessarily confident cuz simply it doesn't look same size it should be similar

Which box plot matches the data set?

34, 36, 41, 45, 49, 50, 51, 52, 56, 59

For the state of said the first quartile is 41, The median is 49.5 and the third quartile is 52.

Please help I will give Brainless

Answers

Answer:

Step-by-step explanation:

34, 36, 41, 45, 49,          50, 51, 52, 56, 59

Yes, the median is 49.5, Q1 is 41, Q3 is 52 (I always have to check)

So the box should start at Q1, end at Q3, and have it's middle line on the median. For this data set, box should start on 41, end on 52, and have its inner line on 49.5.

Of your choices, that's option C.

Please let me know if you have questions.

If Debbie starts a retirement account with $100 that has an annual rate of return of 8%, how long (in years) would it take for her to
have at least $100,000 if interest is compounded continuously?
A) 1 year
B) 8 years
C) 87 years
D) 90 years

Answers

Answer:

C.) 87 years

Step-by-step explanation:

I've taken the test! Hope this helps! ;)

The number of years for her to have at least $100,000 if interest is compounded continuously is 90

How to determine the number of years?

The given parameters are:

Amount, A = 100,000

Principal, P = 100

Rate, r = 8%

Amount is calculated using:

A = P * (1 + r)^t

So, we have:

100000 = 100 * (1 + 8%)^t

Divide by 100

1000 = (1 + 8%)^t

Evaluate the sum

1000 = 1.08^t

Take the logarithm of both sides

log(1000) = log(1.08)^t

Apply the law of logarithm

log(1000) = tlog(1.08)

Solve for t

t = log(1000)/log(1.08)

Divide

t = 89.7

Approximate

t = 90

Hence, the number of years is 90

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Mikhaila had 9 meters of ribbon. She cut it into pieces that were each
1/3 meter long with no ribbon left over. What was the total number of
1/3 meter pieces she made?

Answers

Answer:

klfajndxjfasisfcbweauorfochwszhfshsfqsahfwhnlsljfjlashegfchdhefgwsdgrvefdcgbvdqjejjsjjjdkdkk112132w434

Step-by-step explanation:

5uwsuhsrhudhusfhushzoihflishhghwslhkfwdilhtfhwhshfhhwajzhfshadzkhfcshfuhu3eyryyaurjfsdajsfjfjdgagdgsgafdfzdUDSIUIYAYIODQALHPOEPOWIAYISDHAZAHDCGUQEIUSD8RFHGSHXARAGIUROIHTNDAUFCISBQ3AYHQWEID

Answer:

3 meter

Step-by-step explanation: it ez

11. Angela is using several cones to decorate for a party. The cones she has
chosen are 8 inches tall and have a radius of 3 inches. What is the volume of
one of the cones to the nearest whole cubic inch?

Answers

Answer:

[tex]75.4 in^3[/tex]

Step-by-step explanation:

First start with your cone volume equation which is

[tex]V=\pi r^2\frac{h}{3}[/tex]

Now plug in what you know

r=3

h=8

[tex]V=\pi (3)^2(\frac{8}{3})[/tex]

put in calculator and get

[tex]75.4 in^3[/tex]

find the volume of the composite figure shown ​

Answers

Answer:

The volume is 64 in³

Step-by-step explanation:

You split the rectangles apart and multiply the length times width times height so I got 32 for both of them and added it to get 64.

The answer should be 64n^3

The Alps in Europe are an example of folded mountains. How do folded mountains form? O A. Magma rises to Earth's surface at a plate boundary. O B. Continental plates slip past each other. O O C. A block of crust tilts between two faults. о O D. Crust buckles due to pressure of colliding plates.



help plz​

Answers

Answer:

its D

Step-by-step explanation:

pls help 209572.999129 round to the nearest cent

Answers

Answer:

$209,573.00

Step-by-step explanation:

when rounding to a place, you only need to look at the numbers one place beyond the place you are rounding to. For example, if you want to round 0.878 to the nearest tenth, you only need to look at 0.87, since both 0.87 and 0.878 round to 0.9. In this case, you are rounding to the nearest hundredth because one cent represents one hundredth of a dollar. You only need to look at 209572.999. Since the last digit is 9, which is greater than 5, you round up to 209573.00.

hope this helps please lmk if its wrong :)

hELP
Which equation below would have a y-intercept at (0,7) and open downward? Question 1 options: y = 7x2+16x+26 f(x) =−x2−7x−11 f(x)=−3x2+16x+7 y =7x2+7x−7

Answers

Could you be more clear with the question and put ,

Help not much time left its due in 20 mins

Answers

Answer:

The slope is 2/3

Step-by-step explanation:

To get from one dot to the next...

You go up 2 units and to the right 3 units

2/3 I think(sorry if you got it wrong)

Find the solution to the system of equations.
x + 3y = 4
2x + 5y = 12
A. (3.8)
B. (-8,4)
C. (16,-4)
D. (1.2)
E. (-1,-2)

Answers

Answer:

C (16,-4)

Step-by-step explanation:

16+3*-4=4

16+(-12)=4

16-12=4

4=4

2*16+5*-4=12

32+(-20)=12

32-20=12

12=12

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