Engineering Fundamentals

this is engineering fundamentals homework 5 questions .. NO CHEATING PLEASE 

1- how many cubic yards of concrete is required to construct 1 mile of interstate highway?

2- how many gallons of gassoline are burned when the students in this class leave for schoolbreak, assuming only one-way travel?

3- if all the land (both currently habituated and all the in habituated land) were dvided equally among all the people now living, how much land would each one have?

4- how many times do my rear tires rotate if i drive around the perimeter of campus?

5-a cubic meter of air has a mass of about 1.2 kilograms. what is the total mass of air within 1,000 feet of sea level on planet earth?