Answer:
Explanation:
To find a missing side length, Use Pythagorean Theorem.
Pythagorean Theorem: a^2 + b^2 = c^2
Where a^2 is 8, b^2 is 15 and c^2 is the missing side length.
8^2 + 15^2 = c^2
Simplify the exponents
64 + 225 = c^2
c^2 = 289
Square root c^2
sqrt rt of 289 = 17
so the missing length of the third side is 17