# If a circle has a radius of 9 cm, how do you find the area rounded to the nearest whole number?

May 12, 2018

Area $= 254$ sq cm (To the nearest integer)

#### Explanation:

The area of a circle with radius $r$ is $\pi {r}^{2}$ sq units

Hence, the area of a circle of radius 9cm (A) = $\pi \times {9}^{2}$ sq cm

$\pi \approx 3.14159 \to A \approx 3.14159 \times 81$ sq cm

$\approx 254.46879$ sq cm

$= 254$ sq cm (To the nearest integer)