Calculate the length of an arc of a circle diameter 14 cm, which substends an angle of 90o at the center of the circle
-
\(\frac{7π}{2}\) cm
- 7π cm
- 14π cm
- \(\frac{7π}{4}\) cm
The correct answer is: A
Explanation
Length of an arc = \(\frac{θ}{360}\) x 2πr
\(\frac{90}{360}\) x 2 x π x 7
= \(\frac{7π}{2}\)cm\(^2\)