The angular velocity of a point with radius 8 feet is 10 pi radians per second. find the speed of the point.
0.8pi ft/sec
1.25pi ft/sec
80pi ft/sec

80π feet/ second.

Step-by-step explanation:

Angular velocity of a point = 10π radians per second

Radius of the circle is 8 feet.

We know the formula of angular velocity is

Angular velocity =

10π =

Speed = 80π feet/ second.

Option C is the answer.

Step-by-step explanation:

Formula :   (1)

We are given that , The angular velocity of a point with radius 8 feet is 10 pi radians per second.

i.e. Radius = 8 feet

Angular velocity = radians per second.

Then, the speed of the point will be :-

  [using (1)]

Hence, the speed of the point