Answer:
6x9=54
Step-by-step explanation:
The area of a circle is represented by the equation:

We know that the diameter is two times the radius: 
So if we know that the diameter of the circle is 24m, we can divide this by two in order to get the radius:
-->
So then we can plug this radius in to the equation for the area of a circle:


We are told to use 3.14 as pi, and not pi itself, so let's plug in 3.14 for pi:


Now we know that the area of this circle is 452.16 square meters.
The answer is -12
try using demos it helps a lot with number lines and graphs (:
F(-3)= 3(-3^2)
=3*9=27
therefore, g(f(-3))= 3-2(27)
3-54
=-51