Coral jumps rope for 10 minutes 5 days a week using an 8-foot-long jump rope. She wants to add a weighted
hula hoop workout to her daily exercise routine. She has a choice of either doing short workouts using a 4
pound, 20.5-inch radius hula hoop, or a longer workout using a 3 pound 19-inch radius hula hoop. Assuming
that the tubes that form the hula hoops are of the same diameter, which formula can be used to ﬁnd W, the
difference in circumference of the two hula hoops?

Question

Coral jumps rope for 10 minutes 5 days a week using an 8-foot-long jump rope. She wants to add a weighted
hula hoop workout to her daily exercise routine. She has a choice of either doing short workouts using a 4
pound, 20.5-inch radius hula hoop, or a longer workout using a 3 pound 19-inch radius hula hoop. Assuming
that the tubes that form the hula hoops are of the same diameter, which formula can be used to ﬁnd W, the
difference in circumference of the two hula hoops?

anonymous · Answer

@douglaswinslowcooper