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jekas [21]
3 years ago
9

A porch has the shape of a semicircle with a diameter of 7 ft.

Mathematics
2 answers:
Komok [63]3 years ago
4 0
A = pi * r^2

R = D / 2

R = 7 / 2

R = 3.5

A = 3.14 * 3.5^2

A = 3.14 * 12.25

A = 38.465

Divide it by 2 since its a semi-circle:

38.465 / 2 = 19.2325

So about 19 square feet.
andrey2020 [161]3 years ago
3 0
A = pi * r^2 

<span>A = 3.14 * 3.5^2 </span>

<span>A = 38.465 </span>

<span>38.465/2 = 19.2325 square feet of semicircle </span>
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