A circular mirror has a diameter of 12 inches. What is the are of the mirror in Square inches
1 answer:
Answer:
113.14 square inches
Step-by-step explanation:
Area of circle is given by where r is the radius. The radius is usually half the diameter hence for this case the radius will be 0.5*12=6 inches.
Taking as
then the area will be
Therefore, rounded off to 2 decimal places the area is approximately 113.14 square inches
You might be interested in
The circle's perimeter is determined by F = -9π, according to green's theorem.
<h3>What is Green's theorem?</h3>The simple formula for Green's theorem is the link between the total amount of microscopic circulation inside curve C and the macroscopic circulation revolving around it.
Remembering that we are talking about two dimensions, if C is a straightforward closed curve in the plane, it will enclose the region D (shown in red) in the plane.
So, knowing that this exercise should be solved using Green's theorem, then:
You must convert in this manner to polar coordinates, and the result will be:
Therefore, the circle's perimeter is determined by F = -9π, according to green's theorem.
Know more about Green's theorem here:
#SPJ4
Correct question;
Suppose F⃗ (x,y)=4yi⃗ +2xyj⃗ . Use Green's Theorem to calculate the circulation of F⃗ around the perimeter of a circle C of radius 3 centered at the origin and oriented counter-clockwise.