Question

find the radius of the circle
whose circumference is 57.2cm. take- 22/7​

Answer 1

Circumference of a circle= 2×pi×r

57.2cm= 2×22/7 × radius

57.2 cm ×7 = 44 × radius

400.4cm/44 = radius

radius= 9.1 cm

check:

2× pi×r

2×22/7×9.1

=57.2 cm^2

hope it helps...

Answer 2

Answer:

2x22/7x r = 57.2 = 36.4 answer