If the diameter is 20 cm what is the area based on pi

You have been asked to build a scale model of a restaurant out of bottle caps. the restaurant is 20 feet tall. your scale is 2.4 cm : 1 foot. a: a bottle cap is one point two cm tall> about how many bottle caps tall will your model be? b: you are out of bottle caps, and decide to use popsicle sticks instead. you measure them, and they are 15.2 cm tall. how many popsicle sticks tall will your model be?