Area Circle = pi * r^2
10 inches/2 = 5 inch radius
Area = pi * 5 inches squared
= 78.5 in^2
======( B )
The diameter of a round dinner plate is 10 inches. What is the area of the plate? A. 39.25 inches B. 78.5 square inches C. 314 square inches D. 39.25 square inches