Mathematics
WAEC 1990
A sector of a circle of radius 7cm has an area of 44cm
2. 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
Correct Answer: Option D
Explanation
πr
2 = 360
o
44cm
2 = θ; ∴ θ =
44/πr2
x 360
o = 102.9
o = 103
o
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