6
Question
A tank with length,breadth and height of 5, 6 and 3 units respectively is open at the top. Find the cost of anti-microbial coating inside the tank at the rate of ₹10 per sq. units.
A tank with length,breadth and height of 5, 6 and 3 units respectively is open at the top. Find the cost of anti-microbial coating inside the tank at the rate of ₹10 per sq. units.
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Solution
The correct option is D ₹960
Area inside the tank = Lateral Surface Area + floor area
=2h(l+b)+lb
=2×3(5+6)+5×6
=96 sq.units
So, total cost
=₹10×Area inside the tank
=10×96
=₹960
₹960
Area inside the tank = Lateral Surface Area + floor area
=2h(l+b)+lb
=2×3(5+6)+5×6
=96 sq.units
So, total cost
=₹10×Area inside the tank
=10×96
=₹960
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