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17 June, 17:42

In a circle, a 90° sector has area 64π ft2. What is the radius of the circle?

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Answers (2)
  1. 17 June, 18:39
    0
    S-area of a sector

    S=πr^2n°/360°

    r^2=360°S/πn°

    =360°64π/90°π

    =64*4

    r=√4*4*4*4 (64=4*4*4)

    r=16ft
  2. 17 June, 19:02
    0
    The area of a circle is Pi R² and u do the calculation
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