Question

Find the missing side length.

Answer 1

Why hello there joker o_O

Answer 2

Use pythagorean theorem

Answer 3

a^2+b^2= c^2

Answer 4

I know that its
\[20^{2}+21^{2}=c ^{2}\]

Answer 5

So now just square root it and boom you got your answer!

Answer 6

and that it 400+1681=2081
But how do I put it back into the squared form?

Answer 7

2081=?

Answer 8

Go to:
http://www.purplemath.com/modules/pythagthm.htm

Answer 9

Go to: (calculator)
http://www.miniwebtool.com/pythagorean-theorem-calculator/

Answer 10

Medal?