17) The diameter of the wheel of a car is 140cm. How many revolutions
will it make to travel 22 kilometre?
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diameter = 140 cm
in one
roataion = π 140
= 3.14 × 140
= 439.6 cm
for 22 km = 2200000 cm
no. of
rotations = 2200000 / 439.6
= 5004
nearly 5004 rotations
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