Question

A wheel after 5000 revolution cover 11 kms. What is radius of wheel? 35 cms

Answer 1

Here's your answer!!

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It's given that,


After 5000 Revolution wheel covers 11km.

11km = 11000meter


Therefore ,

5000 Revolution in 11000meter


So,

1 Revolution =

$= > \frac{11000}{5000} meter$

$= > \frac{11}{5} meter$

We know that ,One Revolution is equal to the Circumference.


So ,

According to the question:-


$= > 2\pi \: r = \frac{11}{5}$

$= > 2 \times \frac{22}{7} \times r = \frac{11}{5}$

$= > \frac{44}{7} \times r = \frac{11}{5}$

$= > r = \frac{11}{5} \times \frac{7}{44}$

$= > r = \frac{7}{20} m$

To convert it in cm we will have to multiple it by 100.

Since , 1m =100cm


$= > r = \frac{7}{20} \times 100$

$= > r = 35cm$

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Hope it helps you!! :)