Question

A marine biologist is researching the population density of manatees. The marine biologist counts 550 manatees within a radius of 5 miles of a half circle off the crystal bay.What is the population density of the manatees?

Answer 1

In order to calculate the area of half a circle, we can use the formula below:

`A=(\pi r^2)/(2)`

If the radius is 5 miles, the area is:

Now, to find the population density, let's divide the population by the area:

`d=(P)/(A)=(550)/(39.25)=14`

Therefore the density is 14 manatees per square mile.