Question

the guest room of a house is 12 m long and 5.5 m high. If the total cost of plastering the four walls at rs. 45 is 9900,how broad is the room?

Answer 1

Answer:

Area of 4 walls +area of ceiling =(54+20) m^2 =74m^2. total cost = rate × area = ( 30×74) =222 rupees.