# The cellar

Mr Novák has a cellar and a cellar window in the chalet has 0.6 meter square window. The window wishes to place an X-shaped grid in a square. He uses iron welded bars. Calculate the lengths of individual bars and what the total length of the bars he has to buy.

Correct result:

x =  0.424 m
y =  1.697 m

#### Solution:

$x=\sqrt{ 2 } \cdot \ 0.6/2=0.424 \ \text{m}$
$y=4 \cdot \ \sqrt{ 2 } \cdot \ 0.6/2=1.697 \ \text{m}$

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