The height of the wall is 13 ft if the triangle is 45°-45°-90° option third 13 ft is correct.
It is a triangle in which one of the angles is 90 degrees and the other two are sharp angles. The sides of a right-angled triangle are known as the hypotenuse, perpendicular, and base.
We have a 45°-45°-90° triangle.
As we know, in a triangle with angles of 45°- 45° - 90° the sides of that triangle are in the proportion x : x : x√2.
From the diagram and ratio:
h√2 = 13√2
h = 13 ft
Thus, the height of the wall is 13 ft if the triangle is 45°-45°-90° option third 13 ft is correct.
Learn more about the right-angle triangle here:
brainly.com/question/3770177
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