What is the measure in centimeters of the hypotenuse of a right triangle whose legs measure 8 cm. and 19 cm?

Question

 What is the measure in centimeters of the hypotenuse of a right triangle whose legs measure 8 cm. and 19 cm?

Answer 1

Use the Pythagorean Theorem:

     a² + b² = c²     where a and b are the legs and c is the hypotenuse.

 

    (8)² + (19)² = c²

     64 + 361 = c²

         425 = c²                           (take the square root of both sides)

         c = 20.6 cm       (rounded)