Question

Find the radius of acircle whose circumference is 66
cm.​

Answer 1

heya!!

circumference of circle = 2πr

2πr = 66

πr = 33

r = (33 ×7)/22

r = 21 /2 cm

Thanks ___________

Answer 2

circumference =2×22/7×r

66=2×22/7×r

66/2=22/7×r

33×7/22=r

1.5=r