The Total cost of flooring a room at Rs.8.50 per square meter is Rs.510. If the length of the room is 8km it’s breadth is__________? July 15, 2019 – by admin The Total cost of flooring a room at Rs.8.50 per square meter is Rs.510. If the length of the room is 8km it’s breadth is__________? A. 7.5m B. 8.5m C. 10.5m D. 12.5m