Question

The diameter of a wheel of a car 7267cm. Find the distance covered by the wheel in 500 revolutions.

Answer 1

r = d÷2 = 7267 ÷ 2 = 3633.5 cm
= 36.335 m
circumference = 2πr
= 2 × 22/7 × 36.335
= 2 × 22 × 5.19 = 228.36m
distance covered by wheel
= 228.36 × 500 = 114180 m
= 114.18 km