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19 January, 18:22

Andy would like to put a row of decorative title around his circular pool. The radius of the pool is 5 ft if the titles cost 12 per foot how much will the title cost? Select the correct

250

377

435

350

+4
Answers (2)
  1. 19 January, 18:29
    0
    B

    Step-by-step explanation:

    Use the circle circumference formula.

    C = 2*pi*r

    Plug in 5 for r.

    C = 2*pi*5 or about 31.42

    Multiply 31.42 by 12.

    31.42 * 12 = 377.04

    So the answer is B
  2. 19 January, 18:43
    0
    The title cost 377

    Step-by-step explanation:

    The arc of a circle can be calculated by using the following formula:

    s = rθ

    Where S is the arc of the circle, r the radius and θ the angle. According to the statement, the radius of the pool is 5ft and the angle θ = 2π given that he wants to put a row of decorative title around the whole pool.

    Then s=2π*5ft = 31,415 ft.

    Given that the cost of the titles is 12 per foot, the cost will be:

    Cost = 12*31,415 = 376,98 which is aprox 377.

    The title cost 377
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