Answer:
First Box: Factor by difference of squares
Second Box: It has all perfect squares
Third Box: see my work
Step-by-step explanation:
We have the equation
Before we do anything, let us bring all of the terms to the left side
Now that we have moved the terms to one side, it is clear that we have a difference of squares.
-Work-
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Answer:
in
Step-by-step explanation:
The formula to find the area of a circle: , where
is the radius.
The formula to find the circumference (perimeter) of a circle: , where
is the radius.
1) To find the circumference of the circle, we need to find the radius () first. Since the area of the circle is given to us, we need to equate this to the formula to find the area of a circle.
Cancel the by bringing it to the other side.
÷
2) Find the circumference of the circle by using the formula, .
=
= in