Question

Find the exact length of the third side.
10
5

Answer 1

8.7 (nearest tenth)

Explanation:

Applying pythagorean theorem, a² + b² = c²,

Where,

a = 5

b = the third side

c = hypotenuse = 10

Plug in the values

5² + b² = 10²

25 + b² = 100

Subtract 25 from each side

b² = 100 - 25

b² = 75

Take the square root of both sides

b = √75

b = 8.7 (nearest tenth)