Question

GEOMETRY AID URGENT?

Answer 1

Lets assume center point of circle as O

OD is the radius of circle . so OD is also 7

All the sides of the triangle are equal . so angle at the center O is 60 degree.

radius = 7

Length of arc CD =
`(theta)/(360) * 2*\pi*r`

=
`(60)/(360) * 2*\pi*7`

=
`(1)/(6) * 2*\pi*7`

=
`(7\pi)/(3)`