Question

${\frac{3}{4}}^{th}$ of a cylindrical can contains milk. The height of the can is $1.4m$ and radius is $0.4m$. This milk is poured into small cylindrical glass of height $10cm$ and radius $5cm$. How many small glasses are needed to empty the can.

Answer 1

Volume of can $={\pi r}^{2}h=\frac{22}{7}\times \left(0.4\right)\times \left(0.4\right)\times \left(0.4\right)=0.704{cm}^3$

Volume of milk $=\frac{3}{4}$ (volume of can) $=\frac{3}{4}\times 0.704=0.528m^3$

Now, Volume of glass $=\frac{22}{7}\times 5\times 5\times 10=785.71{cm}^3$

$\therefore$ No. of glass needed $=\frac{528000}{785.71}\approx 673$ glasses