Question

The radius of a wheel is 1/2m. How many rounds do you need to take to cover 11km.of distance​

Answer 1

Solution

Given:-

• Radius of wheel = 1/2 m

Find :-

• Round of wheel , if he cover 11 km distance

Explanation

Using Formula

$\dag\boxed{\underline{\tt{\red{\: Circumference_{wheel}\:=\:2\pi\:r}}}}$

Where,

• r = radius of wheel .
• π = 22/7

First Calculate ,

==> Circumference of Wheel = 2 × 22/7 × 1/2

==> Circumference of Wheel = 2 × 11/7

==> Circumference of Wheel = 22/7 m

We Know,

• 1km = 1000 m

So,

==> 11 km = 11,000 m

Here,

∵ 22/7 m cover distance by wheel = 1 revolution

Then,

•°• 11,000 m cover distance by wheel in = 11,000/(22/7)

•°• 11,000 m cover distance by wheel in = 11,000 × 7/22

•°• 11,000 m cover distance by wheel in = 1000 × 7/2

•°• 11,000 m cover distance by wheel in = 500 × 7

•°• 11,000 m cover distance by wheel in = 3500 revolution

Hence

• wheel need to 3500 round to take 11km cover distance .

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