E
Editor
Sep 18, 2022
If the radius of a circle is 3 cm and an arc is $\frac{2\pi}{7}cm long, then the angle subtended at the centre of the circle by the arc is
Difficulty: Easy
A:
$\frac{7\pi}{2}$
B:
$\frac{2\pi}{21}$
C:
$\frac{5\pi}{2}$
D:
$\frac{7\pi}{3}$
ID: 63273dbaca83163ac3a1319f