Question on: WAEC Mathematics - 2001
A chord of length 30cm is 8cm away from the center of the circle. What is the radius of the circle. What is the perimeter of the sector? Take \(\pi =\frac{22}{7}\)
A
16cm
B
17cm
C
18cm
D
20cm
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Correct Option: B
From the diagram
\(r^2 = B^2 + 15^2\
= 64 + 225\
r = \sqrt{289} = 17cm\)
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