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A sector of a circle of radius 7cm has an area of 44cm2. Calculate the...

Mathematics
WAEC 1990
A sector of a circle of radius 7cm has an area of 44cm2. Calculate the angle of the sector correct to the nearest degree [Take π = 22/7]
  • A. 6o
  • B. 26o
  • C. 52o
  • D. 103o
  • E. 206o
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Correct Answer: Option D
Explanation
πr2 = 360o
44cm2 = θ; ∴ θ =
44/πr2
x 360o = 102.9o = 103o
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