Question

What is the area of the circle ?

Answer 1

≈ 254,47 in^2

Explanation:

Given:

d (diameter) = 18 in

Find: A (area) - ?

First, we have to find the length of the radius (r):

`r = (1)/(2) * d`

`r = (1)/(2) * 18 = 9 \: in`

Now, we can find the area (a):

`a = \pi {r}^(2) = \pi * {9}^(2) = 81\pi \: {in}^(2) ≈254.47 \: {in}^(2)`