Find the radius of a circle in which an arc of ... - WAEC Mathematics 1997 Question
Find the radius of a circle in which an arc of length 44cm subtends angle 200° at the centre of the circle. [Take π = 22/7]
A
3.9cm
B
12.6cm
C
25.2cm
D
38.4cm
correct option: b
44 = 200/360 x 2 x 22/7 x r
r = 360 x 7 x 44/200 x 2 x 22
= 12.6cm
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