In the diagram, O is the centre of the circle of radius 18cm. If < zxy = 70\(^o\), calculate the length of arc ZY. [Take \(\pi = \frac{22}{7}\)]
Attached Figure / Diagram
A
11cm
B
22 cm
C
44 cm
D
80 cm
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Z\({O}\)T = 2 x 70\(^o\) 140\(^o\)
Length = \(\frac{\theta}{360}\) x 2\(\pi\)r
\(\frac{140^o}{360} \times 2 \times \frac{22}{7}\) x 18
= 44cm
Source: Myschool Past Questions Archive (Record #57378)