Question

How many times will the car rotate it's wheel in a journey of 88km if the wheels diameter is 56cm

Answer 1

Hi friend
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Your answer
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Distance covered = 88 km = 8800000 cm

Diameter of the wheel = 56 cm

Radius = 56/2 cm

Then,
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Number of times the wheel needs to rotate to cover 88 km =

Distance to be covered/Circumference of the wheel

$= \frac{8800000}{2 \times \pi \: \times r} \\ \\ = \frac{8800000}{2 \times \frac{22}{7} \times \frac{56}{2} } \\ \\ = \frac{8800000}{22 \times 8} \\ \\ = 50000$
HOPE IT HELPS