Question

Pythagorean theorem please help

Answer 1

Pythagorean theorem: a^2 + b^2 = c^2

c is always the hypotenuse (longest side of the triangle)

Plug the numbers in:

17^2 + ?^2 = 19^2

?^2 = 19^2 - 17^2

?^2 = 361 - 289

?^2 = 72

? = 8.48528137424