calculate the linear speed, in miles per hour, of a 20-inch bicycle being pedaled at a rate of 200 revolutions per minute. Round to the nearest tenth.

Circumference of your bicycle . I assume 20 inches is diameter of your tire. If that is the case, then:

C =20 x Pi =20 x 3.141592 =62.83184 inches.

200 x 62.83184 = 12,566.368 inches travelled in 1 minute.

=11.9 mph.