Each revolution generates  radians per minute.

Four revolutions generates:  radians per minute.

(a)

Angular speed = .

 radians per minute.

(b)

Linear speed = 

= .

From the given data :  feet.

Linear speed = 

 feet per minute.

(a) Angular speed is  radians per minute..

(b) Linear speed is 1256.636 feet  per minute.