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3 October, 09:11

a circle with radius 3 has a sector with a central angle of 17/9 pi radians. what is the area of the sector?

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  1. 3 October, 11:49
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    The area of the sector is 26.69

    Step-by-step explanation:

    First of all we need to calculate the area

    To solve this problem we need to use the area formula of a circle:

    a = area

    r = radius = 3

    π = 3.14

    a = π * r²

    we replace with the known values

    a = 3.14 * (3) ²

    a = 3.14 * 9

    a = 28.26

    The area of the circle is 28.26

    A complete circle has 2pi radians

    We divide 17/9 pi by 2pi and obtain the fraction of the total circle

    (17pi/9) / 2pi = 17/18

    we multiply this fraction with the area of the circle and obtain the area of the sector

    28.26 * 17/18 = 12.43cm

    The area of the sector is 26.69
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