a train running at the speed of 126 km / hr crosses a pole in 9 seconds . find the length of the train .
"speed = 126 * ( 5 / 18 ) m / sec = 35 m / sec length of train ( distance ) = speed * time ( 35 ) * 9 = 315 meter answer : d"
multiply(divide(multiply(126, const_1000), const_3600), 9)