Answer:
The answer is 100π.
Step-by-step explanation:
Since the diameter of the circle is 20mm, the <em>radius of the circle is 20/2 = 10mm.</em>
<em />
The <em>formula for area of a circle is π*r^2. </em>If we substitute r for 10, we get the final answer as 100π or about 314.16.
Answer:
15,746,400
Step-by-step explanation:
This is an example of an exponential function.
1. The function is: 
2. We can plug the number of hours into the equation.
3. population = 800 * 
4. population = 15,746,400