Problem of the Week
for Tuesday, May 28, 2013
Natasha is able to revolve a 2 1/2 foot diameter hula-hoop around her 3/4 of a foot diameter waist while barely moving her center at all. If her two friends stand on opposite ends of Natasha watching, and they happen to be as close as possible to her without interfering with the hula-hoop, what is the distance between the two friends?