Question

What is the Circumference of this circle? Hint: Use the formula A = 2 x pi x r. *
A. 31.4 ft
B. 10 ft
C. 78.5 ft
D. 17.7 ft

Answer 1

The circumference of a circle is the diameter multiplied by Pi. So, for a circle of 5 cm radius: Diameter is (2r) = 2 (5 cm) = 10 cm. The Circumference = ( d ) ( 10 cm) = 10 (Pi) cm.