if a triangle has legs of 9in. and 12in. What is the length of the hypotenuse

Is this a right triangle?

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To find the length of the hypotenuse of a right triangle, you can use the Pythagorean theorem. This theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

In this case, the two legs of the triangle are 9 inches and 12 inches. Let's call the length of the hypotenuse "h".

According to the Pythagorean theorem, we have:

h^2 = 9^2 + 12^2

Simplifying this equation, we get:

h^2 = 81 + 144

h^2 = 225

To find the length of the hypotenuse, we need to take the square root of both sides of the equation:

h = √225

h = 15

Therefore, the length of the hypotenuse is 15 inches.