Question

John has to build a cubical water tank with lid for his house,with outer edge 1.5 m long.he gets the outer surface area of the tank excluding the base covered with square tiles of side 25 cm.find how much he would spend for the tiled,if the cost of the tiles is rs 480 per dozen

Answer 1

Answer:

Answer:

7200

Step-by-step explanation:

The length of each side of the 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 = 5a^2 = 5(150)^2 = 112500 cm^2

Side of tile =25 cm

Area of tile =25 ^2 = 625 cm^2

Number of tiles to cover five sides of the tank = =180

Now,

Cost of one dozen tiles =Rs.480

Hence, total cost of 180= \frac{480}{12} * 180

12

480

∗180 = 720