Question

Hemeed has built a cubical water tank with the lid for his house, with each outer edge 1.5 m long. He gets the outer surface of the tank excluding a base, covered with squares tiles of side 25cm ( see figure 13.5 ) Find how much he would spend for this tiles, if the cost of the tiles is Rs 360 Par dozen.

Answer 1

surface area of cube- 5a2 -5(150)2-112500cm2.area of tiled -a2-(25)2-625cm2 .no.of tile required-112500/625-180(no.of tiles),30 per tile .180*30-rs540