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You ask an employee to string holiday lights around the perimeter of a circular room. The room is 30 feet in diameter. How many feet of lights will she need?

Respuesta :

Answer: 94.24 feet.


Step-by-step explanation:

1. To solve this exercise you must apply the formula for calculate the perimeter of a circle, which is shown below:

[tex]P=2r\pi[/tex]

Where [tex]r[/tex] is the radius of the circle.

2. You can calculate the radius of the circle by dividing the diameter by 2, as following:

[tex]r=\frac{30ft}{2}\\r=15ft[/tex]

3. Substitute this value into the formula. Then, you obtain that the result is:

[tex]P=(2)(15ft)(\pi)\\P=94.24ft[/tex]