An arc subtends an angle of 72\(^o\) at the centre of a circle. Find the length of the arc if the radius of the circle is 3.5 cm. [Take \(\pi = \frac{22}{7}\)]
A
6.6 cm
B
8.8 cm
C
4.4 cm
D
2.2 cm
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Length = \(\frac{\theta}{360}\) x 2\(\pi\)r
= \(\frac{72}{360} \times 2 \frac{22}{7} \times \frac{0.5}{3.5}\)
= 4.4
Source: Myschool Past Questions Archive (Record #57257)