Answer:
9
Step-by-step explanation:
The reason why that is wrong is because it says in terms o pi which means you do NOT multiply pi by the radius squared.
EQUATION FOR AREA OF A CIRCLE: 
When you put it all together you get:
which equals 
DO NOT MULTIPLY 9 AND PI. IT'S JUST 9
hope this helped :)
Answer:
I don´t know sorry
Step-by-step explanation:
The figure is a rhombus J' K' L' M' in a coordinate plane, showing all its vertices.
The vertex J' is the point (0, -2).
And the statement indicates that the quadrilateral JKLM was transformed into the figure J'K'L'M' by the dilation (x,y) -> (x/2, y/2).
Then you have to find the preimag of J' which is J.
You know that x was multiplied by 1/2 to transform into 0, then x/2 = 0 => x =0
And y was mutilplied by 1/2 to transform into -2, then y/2 = -2 => y = -4.
And the pre-image is (0, -4)
Answer: (0, -4)
Hi there!

We can solve by setting both equations equal to each other:
.5x + 4 = -.25x² + 5
Move everything to one side:
0 = -.25x² - .5x + 1
Multiply both sides by 4 to cancel out the decimals:
0 = -x² - 2x + 4
Factor out negative from both sides:
0 = x² + 2x - 4
Use the quadratic formula:

Plug in the corresponding terms:

Simplify:

Simplify the radical to reduce:

Divide all terms by 2:
