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