Question

Find the circumference of a circle with a diameter of 15 cm

Answer 1

radius=15/2
r=7.5cm
circumference=2πr
c=2×22/7×7.5
c=47.14cm

Answer 2

Diameter=15....so,radius=7.5
circumference of circle=2πr
=2×3.142×7.5
=47.13cm^2