Question

Find the distance traveled by a wheel in 20 revolution if the radius of the wheel is 42cm

Answer 1

Total number of revolutions = 20

Radius of the wheel (r) = 42 cm = 0.42 m

Distance covered in one revolution will be equal to the circumference of the circle = $2 \times \pi \times r$

Distance covered in one circle = 2 × 3.14 × 0.42 =

Distance covered in one circle = 2.6376 m

Now,

Distance covered in 20 revolutions = 20 × 2.6376

Distance covered in 20 revolutions = 52.752 meters