# Question #886d3

Oct 2, 2016

X=7

#### Explanation:

Draw a right isosceles triangle ,
We are trying to find the lengths of the legs so let's call each leg x
So each leg is x and the hypotenuse is $\sqrt{2} x$
(Pythagoras)
The perimeter is $x + x + \sqrt{2} x$
or $2 x + \sqrt{2} x$
This is equal to $14 + 7 \sqrt{2}$
This gives x=7

You didn't cover this... but if you are stuck then do something...that is draw the triangle and call the thing you are trying to find x.

DO SOMETHING!!