Answer:
C
Step-by-step explanation:
using Pythagoras' identity in the right triangle.
the square on the hypotenuse is equal to the sum of the squares on the other 2 sides.
let x be the hypotenuse , then
x² = 7² + 8² = 49 + 64 = 113 ( take square root of both sides )
x = [tex]\sqrt{113}[/tex]
