Question

Rondell draws the semicircle shown at the right. What is the area of the semicircle? Use 3.14 for pi​

Answer 1

Since there is no drawing of the semicircle, the steps to solve this question are explained.

The area is given by:

`A = 1.57r^2`

Explanation:

Area of a semi-circle:

The area of a semi-circle is given by the following equation:

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

In which r is the radius.

Use 3.14 for pi​

`A = (\pi r^2)/(2) = (3.14r^2)/(2) = 1.57r^2`

r is the radius, which is the distance from the centre of the circle to an edge, or half the distance between two edges, which is the diameter.