In a right triangle, the length of one leg is 7 ft. The length of the other leg is 10 ft. What is the length of the hypotenuse? A. B. C. D.

Answer 1

A right triangle is governed by the Pythagorean Theorem a² + b² = c², where c is the hypotenuse and a/b are the legs.

If you replace a and b with the respective lengths you get:

7² + 10² = c²

or

49 + 100 = c²

That makes...

c² = 149

and

c = √149 ≈ 12.21