Question

A patio in the shape of a semicircle has a diameter of 21 ft.

What is the approximate area of the patio, rounded to the nearest square foot?
Use 3.14 to approximate pi star times.

Answer 1

The area of a circle is pi*r^2
where r is the radius

radius = diameter/2


Since it is a semi circle it is half a circle and therefore will have half the area of a full circle.

Thus divide the area you get by 2 to get the area of the semi circle