Find the missing length. Round to the nearest tenth, if necessary.

12.4

Step-by-step explanation:

We have a right triangle, so we can use the Pythagorean theorem

a^2 + b^2 = c^2  where a and b are the legs and c is the hypotenuse

3^2 + 12^2 = h^2

9+144= h^2

153 = h^2

Take the square root of each side

sqrt(153) = sqrt(h^2)

12.36931688 =h

Rounding to the nearest tenth

12.4 =h

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answer: idk

step-by-step explanation: