A certain television is advertised as a 21-inch TV (the diagonal length). If the height of the TV is 13 inches, how wide is the TV? Round to the nearest tenth of an inch.

Question

asked Jul 25, 2022 127k views

1 Answer

Matt Wear · Answer 1 · 2022-08-01T04:39:35+0000

Answer:

16.5 inches

Explanation:

Use the Pythagorean Theorem

a² + b² = c²

a² + 13² = 21²

a² + 169 = 441

Subtract 169 from both sides

a² = 272

Take the square root of both sides

a = 16.4924225025

Rounded

a = 16.5 inches