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Question

A tank with length,breadth and height of 5,6 and 3 units respectively is open at top. Find the cost of anti-microbial coating inside the tank if it is done at Rs.10 per sq. units.


  1. Rs. 1260

  2. Rs.960 

  3. Rs.660

  4. Rs.1060


Solution

The correct option is B

Rs.960 


Area inside the tank= Lateral Surface Area + floor

=2h(l+b)+lb

=2 × 3 (5 + 6) + 5 × 6

=96 m2

So, total cost = Rs.96 × 10 = Rs.960

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