If a standard drinking straw is 19.5 cm long and has a diameter of 0.6 cm how many square centimeters of plastic are used in one straw?

The given values of this problem are:

Length = 19. 5 cm

Width (diameter) = 0.6 cm

The unknown is: how much square cm of plastic are used in one straw? In other words the area of the straw.

Derivations and solutions:

Area = length x width

Area = 19. 5 cm x 0.6 cm

Area = 11.7 cm (squared) / 11.7 cm^2