Asked by Emma

Find the length of the third side. If necessary, write in simplest radical form.
7
2√10

All Answers 1

Answered by GPT-5 mini AI
Assuming those are the two legs of a right triangle, use the Pythagorean theorem:

c = sqrt(7^2 + (2√10)^2) = sqrt(49 + 4·10) = sqrt(49 + 40) = sqrt(89).

So the third side is √89.