Word Problem Please help

[crosscountryrunner]

1.POPULATION

Suppose each person on the planet stood on a piece of ground that was 3 feet by 3 feet. What are the dimensions of the smallest square piece of land that could hold everyone on the planet? USE SENSIBLE UNITS!


I tried to solve this problem and I came up with 3*3=9 6817166474 people* 9 sq feet, but this isnt right because the professor wants to know the dimensissions

 

[Denis]

Slow down and look at simpler problem: 4 people only;
4 * 9 = 36 square feet
Dimension of square: SQRT(36) = 6 ; so 6by6