Calculate the length of an arc of a circle diameter 14 cm, which substends an angle of 90o at the center of the circle
A
\(\frac{7π}{2}\) cm
B
7π cm
C
14π cm
D
\(\frac{7π}{4}\) cm
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Length of an arc = \(\frac{\theta}{360}\) x 2\pir
\(\frac{90}{360}\) x 2 x \pi x 7
= \(\frac{7\pi}{2}\)cm\(^2\)
Source: Myschool Past Questions Archive (Record #9245)