Question
A giant circular wheel has a diameter of 63 metres. In
how many revolutions will the wheel cover a total of 79.2 km?Solution
Radius of the giant wheel = 63 á 2 = 31.5 metres Circumference of the giant wheel = 2 Ă Ď Ă radius = 2 Ă (22/7) Ă 31.5 = 198 metres So, number of rotations to cover 79.2 km i.e. 79200 metres = 79200 á 198 = 400
If G = 7 and SOUR = 73, then YEAR = ?
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