**Which of the following is the length of the unknown leg of a right triangle that has one leg length of 10 feet and a hypotenuse of 14 feet? (Round to the nearest tenth.)**

6 feet

15.6 feet

9.8 feet

20 feet

*Correct Answer : C*

The sides of a right-angled triangle are determined by the Pythagoras theorem. If we let the unknown side to x as in the figure below, then theory is applied as follows.

The value of x is found as:

The value of the unknown leg side of a triangle is about 9.8 feet.

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