Question

2. The length, breadth and height of a room are 8.5 m. 7 m and 6.5 m respectively. Find the area of the four
walls of the room.Hence, find the cost of whitewashing the walls of the room and its ceiling at the rate Rs.
8 per square metre
be​

Answer 1

Area of 4 walls =2(lh+bh)
=201.5
Area of 4 walls and ceiling=2(lh+bh)+lb
=261
Cost of whitewashing=area*8
=₹2088