Maths-

General

Easy

Question

# The diameter of a wheel is 98 cm.

a. How many times will it rotate to cover 7.7 km?

Hint:

### Find circumference of the wheel

## The correct answer is: 2500 rotations

### It is given that diameter of the wheel = 98 cm

Radius =

= 49 cm

Circumference of the wheel = 2 p r

= 2 × 49

= 308 cm

a. Distance covered by the wheel = 7.7 km

= 7.7 × 100000

= 770000

No of times wheel rotate =

= = 2500 rotations

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