Question

12. Find the capacity of a rectangular cistern in litres whose dimensions are 12.5 mx 8 m x 4.2 m. Also, find the area of the iron sheet required to make the cistern. ​

Answer 1

Answer:

volume = lbh

12.5 × 8 × 4.2 m = 420 m³

in litres = 420/10000 = 0.042 litres

area of iron sheet required to make cistern = 2h (l+b)

2 (4.2) ( 12.5 + 8)

8.4 × 20.5

172.2 m²