Question

WHAT IS THE CIRCUMFERENCE OF A CIRCLE IF THE RADIUS IS 21IN AND WHATS THE AREA OF THE CIRCLE IF THE RADIUS IS 21 IN?

Answer 1

WHAT IS THE CIRCUMFERENCE OF A CIRCLE IF THE RADIUS IS 21IN AND WHATS THE AREA OF THE CIRCLE IF THE RADIUS IS 21

Answer 2

C=3.14x42...21+21=42....Circumference=131.88

Answer 3

Circumference = 2 pi r = pi d. (because d=2r, you can always switch them)
= 2 pi 21 = 138.88 in.

Area = pi r^2
= pi 21^2 = 1384.74 in^2.

Answer 4

THANKS!