Question

A circular picture is 8 inches in diameter. What is the area of the picture in square inches? A. 4 π square inches B. 8 π square inches C. 16 π square inches D. 32 π square inches

Answer 1

Circle Area (Ac) =

`\pi * {r}^(2)`
r = radius = Diameter/2 = 8/2 = 4 inches


`Ac = \pi * {4}^(2) \\ Ac = 16\pi \: {in}^(2)`
Answer: C, 16 pi square inches.