5
Question
A tank with length,breadth and height of 5, 6 and 3 units respectively is open at top.The cost of anti-microbial coating inside the tank at the rate of ₹10 per sq. units is :___
A tank with length,breadth and height of 5, 6 and 3 units respectively is open at top.The cost of anti-microbial coating inside the tank at the rate of ₹10 per sq. units is :
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Solution
The correct option is D ₹ 960
Area inside the tank = Lateral Surface Area + Area of floor
=2h(l+b)+lb
=2 × 3 (5 + 6) + 5 × 6
= 66 + 30
=96 m2
So, total cost =₹ 96 × 10 = ₹ 960.
₹ 960
Area inside the tank = Lateral Surface Area + Area of floor
=2h(l+b)+lb
=2 × 3 (5 + 6) + 5 × 6
= 66 + 30
=96 m2
So, total cost =₹ 96 × 10 = ₹ 960.
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