Question

find the circumference of the circle below

Answer 1

circumference = 2 pie r

r = 21 cm .

____________________

2 × 22/7 × 21

2 × 66

132 cm.

Answer 2

circumference formula= 2πr

so, radius= 21cm

so we will use π 3.14

2×3.14×21

6.28×21= 131.88 cm.