Garden pond

Concrete garden pond has bottom shape of a semicircle with a diameter 1.7 m and is 79 cm deep. Daddy wants make it surface. How many liters of water is in pond if watel level is 28 cm?

Correct answer:

V =  317.77 l

Step-by-step explanation:

$$\begin{gathered} V={\displaystyle \frac{1}{2}}\pi r^{2}h={\displaystyle \frac{1}{2}}\pi (D\mathrm{/}2{)}^{2}h \\ V={\displaystyle \frac{1}{2}}\pi (1.7\mathrm{/}2\cdot 10{)}^2\cdot (28\mathrm{/}10)=317.77\text{ l} \end{gathered}$$

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