Pool tiles

The pool is 25m long, 10m wide and 160cm deep. How many m² of tiles will be needed on the walls and the pool? How many pieces of tile are needed when 1 tile has a square shape with a 20cm side? How much does it cost when 1m2 of tiles costs 258 Kc?

Result

x =  9050
y =  93396 Kc

Solution:

$a=25 \ \text{m} \ \\ b=10 \ \text{m} \ \\ c=160/100=\dfrac{ 8 }{ 5 }=1.6 \ \text{m} \ \\ \ \\ S=a \cdot \ b + c \cdot \ 2 \cdot \ (a+b)=25 \cdot \ 10 + 1.6 \cdot \ 2 \cdot \ (25+10)=362 \ \text{m}^2 \ \\ d=20/100=\dfrac{ 1 }{ 5 }=0.2 \ \text{m} \ \\ S_{1}=d^2=0.2^2=\dfrac{ 1 }{ 25 }=0.04 \ \text{m}^2 \ \\ \ \\ x=S/S_{1}=362/0.04=9050$

$y=S \cdot \ 258=362 \cdot \ 258=93396 \ \text{Kc}$

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