I’m doing the “Pythagorean theorem” and I have this question where is shows the triangle but on the right side is 85 and in the bottom is 21 I need the answer pls

I’d say letter a..

A. p = 2(l + w)p/2 - l = ww = p/2 - l b. while isolating the variable w in the equation, i first divided both sides by 2 and then i subtracted l from both sides. i hope this .