501 Geometry Questions

Area of a Circle

Piis also essential when calculating the area of a circle. Unlike with cir-
cumference, only the radiuscan be used to calculate area. This means if you
are given the diameter of a circle, you will need to divide it by two to get
the radius before finding the area. Area =πr^2

A = πr^2

A = π(7 inches)^2

A = 49π square inches

AB

7 in.

501 Geometry Questions