a train running at the speed of 52 km / hr crosses a pole in 18 seconds . what is the length of the train ?
"speed = 52 x 5 / 18 m / sec = 130 / 9 m / sec . length of the train = ( speed x time ) . length of the train = 130 / 9 x 18 m = 260 m . answer : c"
multiply(divide(multiply(52, const_1000), const_3600), 18)