Question

The diameter of a wheel of a car is 98 cm. how many revolutions will it make to travel
6160 meters.

Answer 1

first convert cm to m

so .98 m

we know circumference of a circle is 2 pi r

2 * 22/7 * .98/2 ( cuz radius)

= 3.08

so we do not know number of revolutions and take it as "N"

so

N * 3.08 = 6160

N = 200

therefore the number of revolutions is 200

Answer 2

radius of wheel =98/2
circumference = 2*22/7*98/2
= 308 cm
to cover distance 6160 m