Which of these is the algebraic expression for the verbal expression "twelve times the difference of a number and four?"
2 answers:
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The area of the copper circle A= 69.08 .
<u>Step-by-step explanation:</u>
Given data,
Perimeter of the Square =40 inches.
Let us find the measurement of one side.
The formula for perimeter of a square is 4a.
where a is length of one side of a square.
We know that perimeter of the square is 40.
∴ 4a=40.
a=10 inches.
Imagine that moving one side of the square into the circle.
You can observe that length of one side of square is the diameter of the circle.
∴Diameter of the circle =10 inches.
⇒ Radius of the circle r= 5 inches.
Area of the circle A= π.
A= 3.14×5×5.
Area of the circle A= 69.08 .