Find the capacity of a closed rectangular cistern whose length is 8 m, breadth 6 m and depth 2.5 m. Also, find the area of the iron sheet required to make the cistern.

Given,


Dimensions of closed rectangular cistern = 8m × 6m × 2.5 m


Capacity of tank = volume of tank = (l × b × h) = 8 × 6 × 2.5 = 120 m3


Area of iron sheet required to make the tank = 2(lb + bh + hl) = 2(8 × 6 + 6 × 2.5 + 2.5 × 8)=2(48 + 15 + 20)= 2 × 83 = 166m2


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