The true statement is C -12 < -3
Answer:
B
Step-by-step explanation:
Answer:

Step-by-step explanation:
The formula to calculate the surface area of a sphere is the following:

Where A is the area of the sphere and r is the radius of the sphere.
In this case we know that the diameter d of the sphere is:

The diameter is:
.
Thus

Then the surface area of the sphere is:

Add 9 to both sides
x-9=0
x-9+9 = 0+9
x = 9