In the circle above, with centre O and radius 7 cm. Find the length of the arc AB, when < AOB = 57°
A.
5.32 cm
B.
4.39 cm
C.
7.33 cm
D.
6.97 cm
Correct answer is D
Length of arc = \(\frac{\theta}{360°} \times 2 \pi r\)
= \(\frac{57}{360} \times 2 \times \frac{22}{7} \times 7\)
= 6.97 cm