suppose you wanted to line up all the people in the world. Assuming that each person takes up 12 inches of the line, how many times around Earth would they reach? Round your answer to the nearest tenth.
The circumference of the earth=40075 km
1km = 39370.0787 inches
so,circumference of the earth=40075 39370.0787 inches=1.5778 billions inches
Total population of the earth =7.3 billions
Each person takes 12 inches of line
7.3 billions will take 127.3inches=87.6 billion inches