a train running at the speed of 180 km / hr crosses a pole in 9 seconds . find the length of the train .
"speed = 180 * ( 5 / 18 ) m / sec = 50 m / sec length of train ( distance ) = speed * time ( 50 ) * 9 = 450 meter answer : e"
multiply(divide(multiply(180, const_1000), const_3600), 9)