To find the width of Fiona's TV, we can use the Pythagorean theorem, which states that the square of the length of the hypotenuse (in this case, the diagonal) is equal to the sum of the squares of the other two sides.
Let x be the length of the width.
Using the Pythagorean theorem:
(Width)^2 + (Length)^2 = (Diagonal)^2
x^2 + 20^2 = 25^2
x^2 + 400 = 625
x^2 = 225
x = √225
x = 15
Therefore, the width of Fiona's TV is 15 inches.
Fiona’s TV screen is 20 inches long. The diagonal measures 25 inches.
How long is the width of Fiona's TV?
1 answer