The pot

The pot is a cylinder with a volume of V = 7l and an inner diameter of d = 20cm. Find its depth.

Correct answer:

h =  22.3 cm

Step-by-step explanation:

$$\begin{gathered} V=7\text{ l}\to {\text{cm}}^3=7\cdot 1000{\text{cm}}^3=7000{\text{cm}}^3 \\ d=20\text{ cm } \\ r=d\mathrm{/}2=20\mathrm{/}2=10\text{ cm } \\ S=\pi \cdot r^2=3.1416\cdot 10^2\doteq 314.1593{\text{cm}}^2 \\ h=V\mathrm{/}S=7000\mathrm{/}314.1593=22.3\text{ cm} \end{gathered}$$

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