16Hit1600
Advanced MathMediumHypotenuse from a right triangle's area and one leg

Advanced Math practice question

A right triangle has an area of 30 square units, and one of its legs has length 5 units. What is the length of the hypotenuse?

Answer: 13

Area = (1/2)(5)(b) = 30 → b = 12. Hypotenuse = √(25 + 144) = 13.

Common wrong answers

If you answered 12
12 is the other leg.
If you answered 17
17 is 5 + 12.
If you answered 7.81
7.81 is √61, using a leg of 6.

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