Answer:
in 5ft by 5ft = 25ft^2, there can be 1 person
A normal street is 30ft wide
Then, if we want the width such that is 5 ft deep (from both sides)
Then we should subtract two times 5 ft:
30ft - 5ft - 5ft = 20ft.
Now the length is 5 miles
and 1 mile = 5280 ft
then 5 miles = 5*( 5280 ft) = 26,400 ft.
Then the area is:
20ft by 26,400 ft. =528,800 ft^2
And we know that in 25 ft^2 we can fit one person.
How many spaces of 25ft^2 we have in the 528,800 ft^2?
this is:
N = 528,800 ft^2/25ft^2 = 21,152
This means that in the street 21,152 people can fit comfortably.
The size of the crowd is 21,152 people.
