A coaster to put under your drinks on a table is in the shape of a cylinder. It has a diameter
of 10cm and a height of 0.6cm. Betty is going to make these coaster for her friends for their
birthdays by covering them completely with fabric. She has 6 friends who have birthdays in
April so she better get started now. If she wants to make coasters for all of the birthdays,
how much fabric does she need to make all of the coasters?
