# What is the answer to the circumference of a circle?

**circumference of a circle**is the product of pi (π) and the diameter or twice the product of pi (π) and the radius. Example: Find the

**circumference**of the

**circle**with a diameter of 8 inches.

**Answer**: The

**circumference**of the

**circle**is 8π ≈ 25.163 inches.

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 |
---|---|---|

12 | 37.700 | 144.000 |

12 1/4 | 38.480 | 150.060 |

12 1/2 | 39.270 | 156.250 |

12 3/4 | 40.060 | 162.560 |

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.