# Find the area of the circle with a diameter of 20.6 inches. round your answer to the nearest tenth

Find the area of the circle with a diameter of 20.6 inches. round your answer to the nearest tenth

## This Post Has 10 Comments

1. kenzie9493 says:

157 1/7 inches

Step-by-step explanation:

I used the formula, A = pi x r squared then divided by 2, since a semicircle is half of a normal circle.

(22/7 x 10 squared divide by 2)

2. wanderer3653 says:

A

Step-by-step explanation:

A= ¥r2

A= ¥(20/2)2

A= ¥(10)2

A= ¥100cm.

3. carmencc says:

1. 100$\pi$

2. 27 $cm^{3}$

3. 30

Step-by-step explanation:

Area = $\pi$$r^{2}$

= $\pi$ x $10x^{2}$

= 100$\pi$

Volume = l x w x h

= 3 x 3 x 3

= 27

4. vliu470 says:

100π cm^2

Step-by-step explanation:

The area of a circle is given by the formula ...

A = πr^2

where r represents the radius, which is half the diameter. For a circle of radius 10 cm, the area is ...

A = π(10 cm)^2 = 100π cm^2

5. Nanamoney5385 says:

314 cm^2

Step-by-step explanation:

pi(r^2)

r= d/2

pi= 3.14

3.14(10^2)

3.14(100)

314

6. rozalee14 says:

Area = pi r 2
r=10.3

a= pi*10.3^2
a=333.3

7. alasiaca says:

A≈314.16m²

Step-by-step explanation: Hope this helps

8. superbatman9193 says:

2200/7 ≈ 314.2857143

Step-by-step explanation:

The formula for the area of a circle is πr²

Since the diameter is 20, the radius is going to be 10 inches

Now just plug that in and get π(10²) which equals 100π

Now multiply 100 with (22/7) and that gives you 2200/7

9. kiani46 says:

314.6 ft squared I think

10. maddie953 says:

314 in. cubed

Step-by-step explanation:

The formula to find the area of a circle is:

A= πr²

Pi is 3.14 so substitute that in

A= 3.14(r)²

The radius is 10 because the radius is half of the diameter.  Half of 20 is 10.  So substitute that in the radius symbol.

A= 3.14(10)²

Square 10, which is 10 times 10.  10 times 10 equals 100.

A= 3.14(100)

100 times 3.14 is 314 because 100 has two zeroes which means you move the decimal point in 3.14 two places to the right.  It gets you 314.0 which is just 314.

A= 314