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Question
If π is taken as `22/7` the distance (in metres) covered by a wheel of diameter 35 cm, in one revolution, is
Options
2.2
1.1
9.625
96.25
Solution
Diameter of wheel (d) = 35 cm
Radius of wheel (r) = `"d"/2 = 35/2` cm
∴ The distance covered by the wheel in 1 revolution is equal to the circumference of the wheel = 2πr
= `2 × 22/7 × 35/2`
= `cancel2 × 22/(cancel(7)1) × (cancel(35)5)/cancel2`
= 22 × 5
= 110 cm
The distance covered by the wheel in one revolution (in m) is given by = `110/100` = 1.1 m
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