Question

15) A closed cuboidal tank of
dimension 15mx10mx6m is made from a sheet of metal. How much sheet of metal is required?
find the cost of metal sheet
are required at the rate of
Rs 5 per metre square​

Answer 1

Answer:

$= 2(lb + bh + hl) \\ = 2(150 + 60 + 90) \\ = 2 \times 300 \\ = 600m {}^{2} \\ total \: cost = 600 \times 5rps \\ = 3000rps$