## Basic College Mathematics (9th Edition)

The figure is known as a circle, the circumference is $31.4$ ft and the area is $78.5$ sq ft.
1. State the name of the figure: Circle, that has a fixed centre with equal distances from that centre to the circle. 2. Find the circumference of the figure Let $C =$ the circumference of the figure $C = 2 \pi r$ $C = 2(3.14)(5)$ $C = (3.14)(10)$ $C = 31.4$ ft 3. Find the area of the circle Let $A=$ the area of the circle $A = \pi r^{2}$ $A = (3.14)(5^{2})$ $A = (3.14)(25)$ $A = 78.5$ sq ft.