Question

Find the radius of a circle whose circumference is : a) 44 cm b) 66 cm

Answer 1

cir . is 44 2 @r here @ stands for pai
@r= 44/2=22
@=22/7
r=22×7/22
r=7



simi.
r=66/2@
=33/@
33/22×7
3/2×7
1.5×7
13.5

Answer 2

Hey there !!

a) Circumference = 44 cm
2πr = 44
2 × 22/7 × r = 44
r = ( 44 × 7 ) / ( 22 × 2 )
r = 7cm

b) Circumference = 66 cm
2πr = 66
2 × 22/7 × r = 66
r = ( 66 × 7 ) / ( 22 × 2 )
r = ( 3 × 7 ) / 2
r = 21 / 2
r = 10.5 cm