Question

15 people fit comfortably in a 9 feet by 9 feet area use this value to estimate the size of a crowd that is standing 10 feet deep on one side of the street 1 mile long

Answer 1

The estimate crow is 9777 people

Step-by-step explanation:

A square of 9ft by 9 ft has an area of:

`A=9ft\cdot9ft=81ft^2`

In an area of 81ft, fit 15 people.

Now, lats see the area of one mile by 10ft.

There is 5280 ft in one mile.

Then, the area is:

`A=5280ft\cdot10ft=52800ft^2`

If we divide the two areas, we get a ratio:

`(52800ft^2)/(81ft^2)\approx651.85`

we got 651.85 squares of 81ft^2, and in each one fits 15 people. Thus:

`651.85\cdot15=9777.75`

Thus, the estimate is 9777 people in a mile by 10 ft