Question

If the radius of a wheel of a cycle is 42 cm. How much distance will the wheel
cover in 400 revolutions ?
​

Answer 1

Answer:

Radius of the wheel = 42 cm

A revolution of the wheel means that it travelled distance equal to its circumference.

So,

Circumference of the wheel = 2 × 22/7 × 42

= 264 cm or 2.64 m

Number of revolutions done = 400

Total distance covered by the wheel = 2.64 × 400

= 1056 m

I hope this helps.

Answer 2

Answer:-

Your answer is 105600cm or 1056m

EXPLANATION:-

As given , the radius of the wheel is 42cm

To find :- Distance covered by wheel in 400 revolutions

Solution:-

At first, we have to find the circumference of the circle

⟹ circumference = 2πr ( where r is the radius of the circle )

$= \tt \: circumference \: = 2 \times \frac{22}{7} \times 42$

$= \tt \: circumerence \: = 2 \times 22 \times 6$

$= \tt \: circumference \: = 264 \: {cm}^{}$

As , the distance covered in one revolution is equal to the circumference of the circle .

Distance travelled in 1 revolution = 264 cm

Distance travelled by wheel in 400 revolution = 264×400

Therefore The distance covered by wheels in 400 revolution is 105600

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