In the circle above, with centre O and radius 7 cm. Find the length of the arc AB, when < AOB = 57^\circ.
A
5.32 cm
B
4.39 cm
C
7.33 cm
D
6.97 cm
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
Length of arc = \(\frac{\theta}{360^\circ} \times 2 \pi r\)
= \(\frac{57}{360} \times 2 \times \frac{22}{7} \times 7\)
= 6.97 cm
Source: Myschool Past Questions Archive (Record #55456)