Pool

The swimming pool is 10 m wide and 8 m long, and 153 cm deep. How many hectoliters of water are in it if the water is 30 cm below its upper edge?

Correct answer:

V =  984 hl

Step-by-step explanation:

$$\begin{gathered} a=10\text{ m } \\ b=8\text{ m } \\ {c}_1=153-30=123\text{ cm } \\ c=c_1\to \text{ m}=c_1\mathrm{/}100\text{ m}=123\mathrm{/}100\text{ m}=1.23\text{ m } \\ {V}_1=a\cdot b\cdot c=10\cdot 8\cdot 1.23={\displaystyle \frac{492}{5}}=98.4{\text{m}}^3 \\ V=V_1\to \text{ hl}=V_1\cdot 10\text{ hl}=98.4\cdot 10\text{ hl}=984\text{ hl}=984\text{ hl} \end{gathered}$$

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Showing 2 comments:

Math student

IT'S 9 CM NOT 10 CM. SO IT SHOULD BE 4004.

3 years ago  Like

Dr Math

corrected, thank you

3 years ago  Like

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