A streetlight post needs some extra support for potential bad weather and high winds. The city wants to install metal support brackets on the light post. Each bracket will be braced into the ground and will then attach to a point on the pole that is 4.5 ft. from the ground. Each bracket is 6.5 ft. long. How far from the base of the pole should each bracket be braced in the ground? Round to the nearest tenth.(1 point)

Responses

22.0 ft.
22.0 ft.

62.5 ft.
62.5 ft.

7.9 ft.
7.9 ft.

4.7 ft.

1 answer

To find the distance from the base of the pole that each bracket should be braced in the ground, we can use the Pythagorean theorem. In this case, the height of the pole is 4.5 ft, and the length of the bracket is 6.5 ft.

Let's call the distance from the base of the pole to the point of bracing in the ground "x".

Using the Pythagorean theorem, we have:

x^2 + 4.5^2 = 6.5^2

x^2 + 20.25 = 42.25

x^2 = 42.25 - 20.25

x^2 = 22

x ≈ √22

x ≈ 4.69 ft

Rounding to the nearest tenth, each bracket should be braced in the ground at a distance of 4.7 ft from the base of the pole.

Therefore, the correct response is 4.7 ft.