Question

If 15 people fit into a 5 feet by 5 feet square, then about how many people are at a parade if the crowd is 15 feet deep on both sides of the street and standing along a 2 mile section of the parade? (Hint: 1 mile is 5,280 feet)

Answer 1

Answer:

  about 190,080 people

Step-by-step explanation:

The occupied space is 30 ft wide by 2 miles long, so is ...

  (30 ft)(2×5280 ft) = 316,800 ft^2

The number of people per square foot is ...

  (15 people)/(5 ft)^2 = 0.6 people/ft^2

Multiplying the area by the density, we get an estimate of the number of people:

  (316,800 ft^2)(0.6 people/ft^2) = 190,080 people

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It might be appropriate to round this number to the nearest 1000 or even the nearest 10,000. Either way, that estimate is then 190,000 people.