Question

15 people fit comfortably in a 5 feet by 5 feet area. use this value to estimate the size of a crowd that is standing 7 feet deep on both side of the street along a 2 mile section

Answer 1

98560 people

Explanations:

From the given question, we have the following information

The number of people that can fit comfortably in a 5 feet by 5 feet area = 15people

Area = 5ft * 5ft

Area = 25 square feet

The ratio of the number of people per unit area is expressed as:

`\begin{gathered} k=(15)/(5*5) \\ k=(15)/(25) \end{gathered}`

Determine the area occupied by the crowd.

`\begin{gathered} Area=7feet×2mile×2 \\ Area=7ft*10,560ft*2\text{ \lparen1mile = 5280ft\rparen} \\ Area=147840ft^2 \end{gathered}`

Determine the required size of the crowd

`\begin{gathered} Size\text{ of crowd}=(15)/(25)*147,840 \\ Size\text{ of crowd}=(2)/(3)*147,840 \\ Size\text{ of crowd}=98560peoples \end{gathered}`

Hence the size of a crowd that is standing 7 feet deep on both side of the street along a 2 mile section is 98560 people.