the length of a room is 5 m and width is 4.75 m . what is the cost of paying the floor by slabs at the rate of rs . 900 per sq . metre .
"area = 5 × 4.75 sq . metre . cost for 1 sq . metre . = rs . 900 hence total cost = 5 × 4.75 × 900 = 5 × 4275 = rs . 21375 answer is a ."
multiply(900, multiply(5, 4.75))