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15 October, 15:20

Calculate the perimeter of a sector of a circle of radius 7 cm the angle of the sector being 108°

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  1. 15 October, 17:13
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    perimeter=27.2

    formula for perimeter of a sector

    2r+tether divided by 360 multiplied by 2πr

    where r = radius=7, tether = 108

    so 2*7+108:360*2 (22:7*7)

    =14+3:10*44

    =136:5

    =27.2cm
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