Question

The difference between the circumference and radius of a circle is 37cm. Find the circumference of the circle

Answer 1

Difference = 37cm

Circumference - Radius = 37

2πr - r = 37

r (2π - 1) = 37

r (2*22/7 - 1) =37

r (44/7 - 1) = 37

r (37/7) = 37

r = 37 *7/37

So, r = 7 cm

circumference = 2πr

                        = 2 * 22/7 * 7

                        = 2 * 22

                        = 44 cm