Question

Example 2 : Hameed has built a cubical water tank with lid for his house, with each
outer edge 1.5 m long. He gets the outer surface of the tank excluding the base
covered with square tiles of side 25 cm (see Fig. 13.5). Find how much he would
spend for the tiles, if the cost of the tiles is 360
per
dozen.​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

The length of the each side of water tank =1.5m=150cm

As it is given that base is not covered with tiles so, five sides of the tank are

covered with tiles.

Therefore,

Surface area of water tank =5a2 =5(150)2

=112500 cm2

Side of tile =25 cm

Area of tile =252 =625 cm2

Number of tiles to cover five sides of the tank=112500/625 =180

Now,

Cost of one dozen tiles =Rs.360

Hence, total cost of 180= 360/12×180=Rs.5400