Find the capacity of a rectangular cistern in litres whose dimensions are 11.2 m x 6 m x 5.8 m. Find the area of the iron sheet required to make the cistern.
We know that,
Volume of cuboid = Length × Breadth × Height
Therefore,
Volume of the cistern = 11.2 × 6 × 5.8
= 389.76 m3
= 389.76 × 1000
= 389760 litres
Now,
Area of iron sheet that is required to make the cistern = Total surface area of the cistern
We also know that,
Total Surface Area of cuboid = 2 (lb + bh + hl)
= 2 (11.2 × 6 + 11.2 × 5.8 + 6 × 5.8)
= 2 (67.2 + 64.96 + 34.8)
= 333.92 cm2