Question

Find the distance covered by the wheel of a car in 500 revolutions if the diameter of the wheel is 77 cm .

Answer 1

d=77cm
r=77/2 cm
distance covered in one revolution =2πr
=2×(22/7)×(77/2)
=242cm
distance covered in 500 revolutions =242×500=121000cm=1210m=1.21km

Answer 2

radius of wheel =77/2
circumference of wheel = 2×22/7×77/2=242cm
distance covered=242×500=121000cm=1210m