Find the circumference of the circle with radius 7 cm.
The correct option is B: 44 cm
Given: Radius of the circle =7 cm
The circumference of the circle =2πr
=2×227×7
=44 cm
Find the circumference of the circles with the following radius: (Takeπ)
(a) 14 cm (b) 28 mm (c) 21 cm