Question

Find the area of the semi circle. Either enter an exact answer in terms of pie or use 3.14 for pi and enter your answer as a decimal.

Answer 1

The area of a semicircle is half that of a circle, it is given by the formula;

`(\pi r^2)/(2)`

Here, d = 10 and therefore r = 5. The area is;

`A=(\pi*5^2)/(2)=(25\pi)/(2)=12.5\pi`

Therefore, the area is;

`\begin{gathered} 12.5\pi\text{ }units^2 \\ \\ or \\ \\ 39.25\text{ }units^2\text{ } \end{gathered}`