# Children's pool

Children's pool at the swimming pool is 10m long, 5m wide and 50cm deep. Calculate:

(a) how many m2 of tiles are needed for lining the perimeter walls of the pool?
(b) how many hectoliters of water will fit into the pool?

Result

S =  65 m2
V =  250 hl

#### Solution:

$a = 10 \ m \ \\ b = 5 \ m \ \\ c = 50 \ cm = 50 / 100 \ m = 0.5 \ m \ \\ \ \\ S = a \cdot \ b + 2 \cdot \ (a+b) \cdot \ c = 10 \cdot \ 5 + 2 \cdot \ (10+5) \cdot \ 0.5 = 65 = 65 \ m^2$
$V_{ 1 } = a \cdot \ b \cdot \ c = 10 \cdot \ 5 \cdot \ 0.5 = 25 \ m^3 \ \\ V = V_{ 1 } \rightarrow hl = V_{ 1 } \cdot \ 10 \ hl = 250 \ hl = 250 \ \text { hl }$

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#### Following knowledge from mathematics are needed to solve this word math problem:

Do you know the volume and unit volume, and want to convert volume units?

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