Question

A)
The size of a TV is the diagonal length of the TV. Use a Pythagorean triple to find the length of a 20-inch TV, given that its width is 12 inches.
(1 point)

Answer 1

Let the unknown side be L. By the Pythagorean theorem,

L^2 + 12^2 = 20^2
L^2 + 144 = 400
L^2 = 256
L = 16.

So the length (height) is 16 inches. (This is the 12-16-20, a 3-4-5 triple scaled by 4.)