Question

A windowpane is 20 centimeters tall and the diagonal distance from one corner to the other is

25 centimeters. How wide is the windowpane?
centimeters

Answer 1

The windowpane is 15 centimeters wide.

Explanation:

Use the Pythagorean theorem:

a^2 + b^2 = c^2

20^2 + b^2 = 25^2

400 + b^2 = 625

b^2 = 225

b = 15