Question

road roller makes 1400 revolutions, if the radius is 2.5m then what is the distance covered?

Answer 1

circumference of roller
$= 2\pi \times radius$
$= 2 \times 22 \div 7 \times 2.5$
15.71m
distance =circumference ×1400
$= 15.71 \times 100 = 21994 m$