a wheel with diameter 40 cm makes 50 revolutions per minute. how long it take to cover a distance of 6.28 km?

Answer 1

circumference = 40π cm
so in one minute would cover 50(40π) or 2000π cm

to cover 6.28 km or 628000 cm would take
628000/(2000π) minutes , or
99.949.... minutes, which is appr 1hr and 40 minutes

Answer 2

circumference = diameter * 3.14 = 125.6 cm
in one minute = 125.6 * 50 = 6280 cm or 0.0628
to cover 6.28 km = 6.28/0.0628 = 100m or 1 hour 40 minutes

Answer 3

A wheel with diameter 40 cm makes 50 revolutions per minute. How long will it take to cover a distance of 6.28 km ?(Use r =3.14)

Answer 4

Find the area of a right triangle with hypotenuse 13 cm base 5 cm