Question

The diameter of a wheel is 28 cm. How many revolutions will it make to travel 352 m?

Answer 1

Diameter = 28 cm
Therefore radius = 28 / 2 = 14
Circumference = 2pier
= 2× 22/ 7 × 14
= 88cm
As, we know
Circumference = 1 revolution
88cm= 352m
As we know 1m= 100cm
352m= 352 × 100= 35200cm
Therefore,
35200cm = 88cm
= 35200/ 88
= 400cm

Therefore, 400 revolutions is correct answer of above mentioned statement.

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Answer 2

Answer:

The wheel goes a distance equal to the circumstances of the wheel in one rotation = 2π r

2× 22/7 ×28 cm

2×22×4

44×4 = 176

352m = 352 × 100 cm

number of rotations of the wheel =

352×100cm/176cm

35200/176

200 times ans

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