Question

find the radius of a circle whose circumstances is 84cm. use pai=22/7

Answer 1

hey there !

circumference of circle = 2πr

now we have given that circumference = 84

therefore ,

2πr = 84

2×22/7×r = 84

r = 84×44/7 = 13.3636.... cm

hence radius of circle = 13.36cm

hope it helps ,

be brainly ♥ together we go far ,

Answer 2

hey mate

as we know that the formula to calculate the circumference of a triangle is

C = 2πr

by putting the value

84cm = 2 x 22/7 x r

r = 84 x 7 / 2 x 22

r = 13.36

so the radius of the circle is 13.36 cm