Question

If a wheel covers a distance of 440 m in 20 rotations. Then the diameter of wheel

Answer 1

distance I one rotation = 440/20 = 22 m
area of the wheel is covered in 1 rotation. so diameter = 2* root over 22/ pi

Answer 2

Wheel covers a distance = 440 m

Total rotation=  20

Therefore distance covered in 1 revolution= 440÷20= 22

1 revolution=  2πr

22= 2×22/7× r ( w.k.t π= 22/7)

r = 7÷ 2,

Multiplying radius ×2 we get diameter

7/2×2 = 7.

Therefore Dia is 7 m