Question

what's the area of a semicircle with a radius of 3? While also having to round the answer to the nearest tenth.

Answer 1

A semicircle is half a full circle

The area of a circle is given by

`A=piXr^2`

The area of a semicircle will be given by

`A_{semicircle\text{ }}=(\pi r^2)/(2)`

pi = 3.142, r =3

`A\text{ =}\frac{3.14\text{ x 3 x3}}{2}`

A = 14.13 square ft

A = 14.1 square feet (To the nearest tenth)