Question

How much would it cost to paint a 5m high brick shaped water tank on the outside of a 6 m side square at the rate of ₹80 per square meter?
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Answer 1

Area to be painted = Outer Lateral Surface Area of the wall

Now, length of wall = 6m (adjacent to the side of the pool)

         the breadth of wall = 5m (given, the wall is 5m high)

So, the L. SA = 4(6 x 5) = 4(30) = 120 m^2

Now, cost of painting (@ ₹80 per square meter) = ₹(120*80) = ₹9600