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18 July, 21:37

A sector with an area of 11/2*pi cm^2 has radius of 3 cm. What is the central angle measure of a sector in degrees?

190

200

210

220

+5
Answers (1)
  1. 19 July, 00:18
    0
    Step-by-step explanation:

    Area of sector = angle/360 * pi * r^2

    5.5pi = angle/360 * pi * 9

    5.5 = angle/360 * 9

    angle = (5.5 * 360) / 9 = 40 * 5.5 = 220
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