A man built a cubical water tank with lid for his house, with each outer edge 1.5 m long. He gets the outer surface of tank excluding the base covered with square tiles of side 25 cm. Find how much he would spend for the tiles, if cost of tiles is Rs. 480 per dozen.

Asked by Topperlearning User | 12th Mar, 2014, 09:37: AM

Expert Answer:

Surface Area of tank = 5a2      (Area of 5 faces only)

Area of one square tile = lb

= 25 cross times25 cm2

Cost of 180 tiles =480 over 12 cross times 180 

= Rs. 7200

Answered by  | 12th Mar, 2014, 11:37: AM