Question

A TV on ebay is described to be 35.7 inches wide and 20.1 inches

high. To the nearest whole number how many inches is it's diagonal?
(Enter your answer without units.)

Answer 1

41 in.

Explanation:

You have to use the Pythagorean Theorem. You have the values for the two sides (length and width). Now, you need to solve for the hypotenuse (diagonal).

a² + b² = c²

(35.7)² + (20.1)² = c²

1274.49 + 404.01 = c²

1678.5 = c²

√1678.5 = c

c = 40.97

c ≈ 41

The diagonal length is 41 in., to the nearest whole number.