the diameter of the driving wheel of a bus in 140 cm . how many revolutions per minute must the wheel make in order to keep a speed of 20 kmph ?
distance covered in 1 min = ( 20 * 1000 ) / 60 = 333.33 m circumference of the wheel = ( 2 * ( 22 / 7 ) * . 70 ) = 4.4 m no of revolution per min = 333.33 / 4.4 = 75.75 answer : d
divide(divide(multiply(20, const_1000), const_60), multiply(multiply(divide(add(20, const_2), add(const_4, const_3)), const_2), divide(divide(140, const_100), const_2)))