a room of 2 m 40 cm long and 4 m 20 cm broad is to be paved with square tiles . find the least number of square tiles required to cover the floor .
"explanation : area of the room = 240 * 420 sq cm size of largest square tile = h . c . f of 240 cm and 420 cm = 60 cm area of 1 tile = 60 * 60 sq cm no . of tiles required = ( 240 * 420 ) / ( 60 * 60 ) = 28 answer : c ) 28"
divide(multiply(add(multiply(2, const_100), 40), add(multiply(4, const_100), 20)), power(divide(add(multiply(2, const_100), 40), power(const_2, const_4)), const_2))