Answer:
193.630
Step-by-step explanation:
Given : The biologist counts 152 salamanders
The radius of pond is [tex]\frac{1}{2}[/tex] miles
To Find: population density of salamanders
Solution:
[tex]\text{Population Density}=\frac{\text{Population size}}{\text{Area}}[/tex]
So, Population size = 152 salamanders
Area of pond = [tex]\pi r^2[/tex]
= [tex]3.14 \times (\frac{1}{2}^2)[/tex]
= [tex]0.785[/tex]
So, [tex]\text{Population Density}=\frac{152}{0.785}[/tex]
[tex]\text{Population Density}=193.630[/tex]
So, The population density of salamanders is 193.630 salamander per miles sq.
