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]

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Solution

Formula: 1 Mark
Application: 1 Mark

$r = 7, h = 20$

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

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

$= 3080 {c m}^{3}$

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

$308 s = 5.13 m i n$

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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]

Formula: 1 Mark Application: 1 Mark r=7,h=20 Volume of the saline bottle =πr2h =227×72×20 =3080cm3 No. of seconds needed =308010=308s 308s=5.13min

Formula: 1 Mark
Application: 1 Mark

$r = 7, h = 20$

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

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

$= 3080 {c m}^{3}$

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

$308 s = 5.13 m i n$