16Hit1600
Geometry and TrigonometryEasyHypotenuse of a 3-4-5 triangle

Geometry and Trigonometry practice question

A right triangle has legs of length 3 and 4. What is the length of its hypotenuse?

Answer: 5

By the Pythagorean theorem, 3² + 4² = 9 + 16 = 25, and √25 = 5.

Common wrong answers

If you answered 7
7 is 3 + 4.
If you answered 12
12 is 3 × 4.
If you answered 25
25 is the square of the hypotenuse.

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