Question

Find the capacity of a rectangular cistern in litres whose dimensions are $11.2m\times 6m\times 5.8m$ Find the area of the iron sheet required to make the cistern.

Answer 1

Length of rectangular cistern (l)=11.2 m

Breadth (b)=6 m

Height (h)=5.8 m

(a)Volume =lbh $=11.2\times 6\times 5.8m^3$

$=389.76m^3$

$\therefore$ Capacity in litres

$=389.76\times 1000$ litres

=389760 litres

(b)Total surface area =2[lb+bh+hl]

$=2[11.2\times 6+6\times 5.8+5.8\times 11.2]m^2$

$=2[67.2+34.8+64.96]m^2$

$=2\times 166.96=333.92m^2$