A wall in Maria's bedroom is in the shape of a trapezoid. The wall can be divided into a rectangle and a triangle.

Using the [tex]$45^{\circ}-45^{\circ}-90^{\circ}$[/tex] triangle theorem, find the value of [tex]$h$[/tex], the height of the wall.

A. 6.5 ft
B. [tex]$6.5 \sqrt{2}$[/tex] ft
C. 13 ft
D. [tex]$13 \sqrt{2}$[/tex] ft



Answer :

To find the height of the wall, we need to consider the properties of a 45-45-90 triangle. In a 45-45-90 triangle, the lengths of the legs are equal, and the length of the hypotenuse is the leg length multiplied by [tex]\(\sqrt{2}\)[/tex].

Given:
- One leg of the 45-45-90 triangle is 6.5 feet.

1. According to the properties of the 45-45-90 triangle, the length of the hypotenuse can be calculated using the formula:
[tex]\[ \text{Hypotenuse} = \text{Leg Length} \times \sqrt{2} \][/tex]
2. Substituting the given leg length (6.5 feet) into the formula:
[tex]\[ \text{Hypotenuse} = 6.5 \times \sqrt{2} \][/tex]

3. Now, calculating the value:
[tex]\[ 6.5 \times \sqrt{2} \approx 6.5 \times 1.41421356237 \approx 9.19238815542512 \, \text{feet} \][/tex]

Therefore, the height [tex]\(h\)[/tex] of the wall is approximately:
[tex]\[ 9.19238815542512 \, \text{feet} \][/tex]

This is the height (hypotenuse in this context) we needed to find.