Question

Find the area of a semicircle whose radius is 2.4 cm

Answer 1

Area of semi circle = 9.05 square cm

Explanation:

`Area \ of \ circle = \pi r^2\\\\Area \ of \ semi - circle = (1)/(2) \pi r^2 = (1)/(2) \pi (2.4)^2 = 9.047 = 9.05 \ cm^2`

Answer 2

`9.0432 \: {cm}^(2)`

Explanation:

Area of semicircle

`= (1)/(2) \pi \: {r}^(2) \\ \\ = (1)/(2) * 3.14 * {(2.4)}^(2) \\ \\ = (1)/(2) * 3.14 * 5.76 \\ \\ = (1)/(2) * 18.0864 \\ \\ = 9.0432 \: {cm}^(2)`