1 Answer

Vadim Loboda · Answer 1 · 2022-01-01T08:07:48+0000

Hello!

$\large\boxed{x = 15}$

Use the Pythagorean Theorem to solve for x:

a² + b² = c²

We are given the lengths of two sides, so we can plug those into the formula:

9² + 12² = x²

81 + 144 = x²

225 = x²

√225 = x

x = 15.

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