A chord of length 30cm is 8cm away from the cen... - WAEC Mathematics 2001 Question
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
correct option: b
From the diagram
\(r^2 = B^2 + 15^2\
= 64 + 225\
r = \sqrt{289} = 17cm\)
Please share this, thanks:
Add your answer
No responses