Question

Find the diameter of a circle, whose circumference is :
(i) 44m (ii) 22cm (iii) 66m
(iv) 30.8m
(Who will be the first to answer will be marked as Brainliest)​

Answer 1

Answer:

Circumference : 2πr

(1) 44m

44=2×22/7×r

r=44×7/2×22

Radius = 7m

Diameter = 7×2 = 14m

(2) 22cm

22=2×22/7×r

r=22×7/2×22

Radius = 3.5cm

Diameter = 3.5×2 =7cm

(3) 66m

66=2×22/7×r

r=66×7/2×22

Radius = 10.5m

Diameter = 10.5×2 = 21m

(4) 30.8m

30.8=2×22/7×r

r=30.8×7/2×22

Radius = 4.9m

Diameter = 9.8m