Atish has built a cubical water tank with lid in his house, with each outer edge 1.5 m long.
He gets the outer surface of the tank covered with square tiles of side 30 cm. Find how
much he would spend for the tiles, if the cost of tiles is Rs.250 for 5 tiles.
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Step-by-step explanation:
Given: The edge of tank =1.5 m
=150 cm
cost of 5 tiles = 250.
Therefore,. Cost of 1 tiles = 250 ÷ 5
= 50
Surface area of square tank = 5a^2
= 5 × 150 ^2
Area of each tiles = 30 ^2
No. of tiles = 5×150×150÷30×30
=125 tiles
Cost of 125 tiles = 125×50
= Rs. 625
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