Question

find the circumference of a circle whose radius is2.5cm​

Answer 1

radius= 2.5 CM

Circumference of circle= 2πr

circumference of circle= 2×22/7×2.5

= 15.71cm.

Answer 2

•circumference of a circle=2πr

•radius=2.5

•2ײ²/7×2.5

•2×22/7×25/10

•1100/70

•15.7142857