Question

Can someone help me? Thanks! :)

Answer 1

The unknown side to the triangle is 75 cm.

Explanation

Let x be the length of the unknown side:

x^2 + 40^2 = 85^2

x^2 + 1600 = 7225

x^2 = 7225 - 1600

x^2 = 5625

x = 75

Answer 2

75 is the length of the third side