Question

If a wheel covers a distance of 440 m in 20 rotations then the diameter of the wheel is

Answer 1

Here is your solution

Given :-

If a wheel covers a distance of 440 m in 20 rotations

using unitary method

20 rotation = 440m

1 rotation = 440m /20 = 22m

Now

1 rotation = circumference of wheel

22m = 2 × π × r

22m = 2 × 22/7 × r

r = 3.5m



Diameter = 2 × radius

Diameter = 2 × 3.5 = 7m

Hence

Diameter of the wheel is 7m


Hope it helps you

Answer 2

Here's your answer. Don't mind my handwriting. Just go with the answer.