Question

find the area and circumference of a circle with radius 4 in.

Answer 1

area = PI * radius ^ 2
area = 3.14159 * 4 ^ 2
area = 3.14159 * 16
area = 50.26544 square inches

circumference = 2 * PI * radius
circumference = 2 * 3.14159 * 4
circumference = 25.13272 inches

 

Answer 2

Answer is provided in the image attached.