Question

Pythagorean theorem: Show work please free points!!!!

Answer 1

So if you have a right triangle with legs legnth a and b and a hypotonuse legnth c, then a^2+b^2=c^2 given in the comments is that a=15 c=20 input and solve 15^2+b^2=20^2 225+b^2=400 subtract 225 from boths ides b^2=175 take square root of both sides b=5√7

Answer 2

The therorem is: 

$a^{2} + b^{2} = c^{2}$
or, solving for b:
$b = \sqrt{c^{2}-a^{2}}$

$b = \sqrt{20^{2}-15^{2}}$
$b = \sqrt{400-225}$
$b = \sqrt{175}$
$b \approx 13.23$