The answer and workings are in the document below. Please open it up in a new window to see it in full.
Answer and Step-by-step explanation:
Simply use the Pythagorean Theorem to solve.
The Pythagorean Theorem is used to solve for a side in right triangles.

<u>Plug the sides values into the equation.</u>
<- This is the answer.
<em><u>#teamtrees #PAW (Plant And Water)</u></em>
W=15
Subtract 80 from both sides then you divide by -2w.