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: Option D
Explanation
Length of arc = (frac{theta}{360°} times 2 pi r)
= (frac{57}{360} times 2 times frac{22}{7} times 7)
= 6.97 cm
There is an explanation video available below.