What does 500cm mean in footage?

What is the total area of the surface of a 3d object called? Does a hexagon have less sides than a octagon? What is 41 percent in a fraction? How many times did God increase the size of Hell? What side is typically the reactant side? What is quadratic equation in real life? What is the molecular geometry of a methane (CH4) molecule? A sequence of numbers was generated using the rule 3N minus 2 where n represents a numbers position in the sequence. Write a sequence that fits this rule? How many different basketball teams of 5 people can be chosen from 10 people? Price of Bag of m and m's? What is 246 percent as a decimal? What two numbers multiply to negative 7 and add to 4? Why singleton set is open in R? Why are the variables in an algebraic expression written in small letters? What is the lateral surface area of a cylinder with the radius 5 and the width 10? What is the wave frequency of a periodic wave of 40 nanoseconds? What kind of economy is it when there is more than one ruler? How many zeros in one crore fifty lakh? How many tons in a gigaton? How do you figure out if a number is prime?