What is the answer to the circumference of a circle?
In respect to this, what unit is used for circumference of a circle?
To find the circumference of a circle, take its diameter times pi, which is 3.14. For example, if the diameter of a circle is 10 centimeters, then its circumference is 31.4 centimeters. If you only know the radius, which is half the length of the diameter, you can take the radius times 2 pi, or 6.28.
Also Know, what is the formula for area? Area is measured in square units such as square inches, square feet or square meters. To find the area of a rectangle, multiply the length by the width. The formula is: A = L * W where A is the area, L is the length, W is the width, and * means multiply.
Likewise, people ask, what is the circumference of a 12 inch circle?
Circumference & Areas
|Size in Inches||Circumference Inches||Area in Square Inches|
What is the area of a semicircle?
Area of a Semicircle In the case of a circle, the formula for area, A, is A = pi * r^2, where r is the circle's radius. Since we know that a semicircle is half of a circle, we can simply divide that equation by two to calculate the area of a semicircle. So, the formula for the area of a semicircle is A = pi * r^2/2.