# Math Help - square root answer / problem

1. ## square root answer / problem

not surehow for 1.27 a the answer is a sqrt 2 and for b the answer is a/sqrt 2 can any one kindly go through the steps as this as been bugging me for days. many thanks

2. ## Re: square root answer / problem

Originally Posted by davellew69
not surehow for 1.27 a the answer is a sqrt 2 and for b the answer is a/sqrt 2 can any one kindly go through the steps as this as been bugging me for days. many thanks

If:
Code:
         /|
/ |
a /  |
/   | L
/    |
/     |
/      |
--------
L
Then $a = \sqrt 2 \cdot L$
So $L = \frac{a}{{\sqrt 2 }}$.
That's what the solution says.