Question

A cylindrical saline bottle has a radius of 7 cm and height of 20 cm. If the saline is released at a rate of 10 cubic cm per second, in approximately how many minutes does the saline bottle get emptied? [2 MARKS]

Answer 1

Formula: 1 Mark
Application: 1 Mark

$r=7,h=20$

Volume of the saline bottle $=\pi r^{2}h$

$=\frac{22}{7}\times 7^2\times 20$

$=3080{cm}^3$

No. of seconds needed $=\frac{3080}{10}=308s$

$308s=5.13min$