Question
A wheel travels 5.28 km in 60 complete revolutions.
Calculate the diameter of the wheel. (Use π = 22/7)Solution
ATQ,
5.28 km = 5.28 × 1000 = 5280 metres
Circumference of the wheel = 5280 ÷ 60 = 88 metres
Let the radius of the wheel be 'x' metres
Circumference = 2πr
ATQ:
88 = 2 × (22/7) × x
x = 14
Diameter = 14 × 2 = 28 metres
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