Question

find the radius of circle whose circumference is 176 centimetre

Answer 1

circumference= 2πr= 176cm

2×(22/7)×r= 176

r=44×7/11

r=28cm

radius of the circle is 28 cm

Answer 2

c=2πr
1.76m=2×22/7×r
1.76=44/7×r
1.76/r=44/7
cross multiply
44×r=1.76×7
r=12.32/44
r=0.28m