**What is the diameter of a 20cm circle?**

Circles (basic)

Diameter |
Circumference(approx) | Circumference |
---|---|---|

20 cm |
60 cm | 62.8cm |

40 cm | 120 cm | 125.6cm |

3m | 9m | 9.42m |

5 cm | 15.7 cm | 15.7cm |

Furthermore, how do you figure the diameter of a circle?

To **calculate** the **diameter of a circle**, multiply the radius by 2. If you don’t have the radius, divide the circumference of the **circle** by π to get the **diameter**. If you don’t have the radius or the circumference, divide the area of the **circle** by π and then find that number’s square root to get the radius.

Secondly, what is the circumference of a 20 foot diameter circle? **Circumference** = 62.857 **ft**. Answer: the **circumference** of the **circle** having **20 ft diameter** is 62.857 **ft**.

Also question is, what is the diameter of a 10cm circle?

**Diameter** is the longest line that you can draw in a **circle** passing through the centre of the **circle**. Radius is the line joining the centre of the **circle** to any point on the circumference. Answer: the radius of **10 cm diameter circle** is 5 cm.

What is the circumference of a 12 inch diameter 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 |

37 Related Question Answers Found

Table of Contents

###
What is the diameter of a round table?

What sizes do **circular tables** come in? **Round tables** range in size from two person **tables** with **diameters** of 2’6” | 76 cm, to 12 person **tables** with 8′ | 244 cm **diameters**.

###
What is the area of an 8 inch circle?

Area of a 8 Inch Circle

201.06 | square inches |
---|---|

1.3963 | square feet |

0.12972 | square meters |

1,297.2 | square centimeters |

###
How do you find the inner diameter from the outside diameter?

Subtract the **inside diameter** from the **outside diameter** of the pipe. The result is the combined thickness of the pipe walls on both sides of the pipe. For example, if the **outside diameter** is 6 inches and the **inside diameter** is 5 inches, the combined size of the opposite pipe walls is 1 inch.

###
What is a radius of a circle?

The **radius of a circle** is the distance from the center of the **circle** to any point on its circumference. [1] The easiest way to find the **radius** is by dividing the diameter in half.

###
What is the diameter of an 8 inch circle?

The circumference of a **circle** that has a **diameter** of **8 inches** is 25.12 **inches**.

###
What is the diameter of a 12 inch circle?

So if the **radius** of the **circle** is **12**“, then the area “A” is (approximately) 3.14 * **12**^2 or about 3.14 * 144 = 452.16 square **inches**. If the **diameter** of the **circle** is **12**“, then the **radius** is 6″ (half the **diameter**), and the area “A” is (approximately) 3.14 * 6^2 or about 113.04 sq.

###
What is the area of 17cm?

**Area** of a circle in terms of radius: r2 = 3.14 × 172 = 907.9 square cm.

###
What is the radius of 7cm?

Since the diameter d is equal to 2 times the **radius** r , the formula for circumference using **radius** is 2πr 2 π r .

###
How do you draw a 10 cm diameter circle?

**Step-by-step explanation:**

- Mark a point X on the centre of your page.
- To draw a circle of diameter 10 cm, we need to first calculate the radius.
- Radius = diametre/2 = 10/2 = 5 cm.
- Now, take a compass and open it to 5 cm.
- Place the needle of the compass on the point marked X and draw a full circle on the page.

###
How do I find the length of an arc?

To **find arc length**, start by dividing the **arc’s** central angle in degrees by 360. Then, multiply that number by the radius of the circle. Finally, multiply that number by 2 × pi to **find** the **arc length**.

###
What is the circumference of a 6 cm diameter circle?

**What is the circumference of a 6** inch **diameter circle**? The **circumference** of a **circle** is 6.28.

###
What is diameter if circumference is known?

Solve the equation for the **diameter** of the circle, d= C/π. In this example, “d = 12 / 3.14.” or “The **diameter** is equal to twelve divided by 3.14.” Divide the **circumference** by pi to get the answer. In this case, the **diameter** would be 3.82 inches.

###
What is pi r2?

**Pi** r-squared is the formula for the area of a circle of radius r. The lowercase Greek letter **pi** (written ) stands for the ratio of circumference to diameter, which is the same for all circles because they all have the same shape.

###
How do you draw 6 cm in diameter?

**How to draw a circle of diameter 6 cm**

- Take your Rounder.
- Insert your pencil.
- measure 3cm in the rounder.
- place the pointed end on the paper and draw the circle.
- The circle drawn will be with diameter of 6 cm.

###
Is diameter a chord?

A **chord** of a circle is a straight line segment whose endpoints both lie on the circle. A **chord** that passes through a circle’s center point is the circle’s **diameter**. Every **diameter** is a **chord**, but not every **chord** is a **diameter**. The word **chord** is from the Latin chorda meaning bowstring.

###
How do you solve for radius and diameter?

Just remember to divide the **diameter** by two to get the **radius**. If you were asked to find the **radius** instead of the **diameter**, you would simply divide 7 feet by 2 because the **radius** is one-half the measure of the **diameter**. The **radius** of the circle is 3.5 feet. You can also use the circumference and **radius** equation.

###
How do you find the radius and diameter of a circle?

Take the circumference of a **circle** and divide it by Pi. For example, if the circumference is 12.56, you would divide 12.56 by 3.14159 to get 4, which is the **diameter** of the **circle**. Use the **diameter** to **find** the **radius** by dividing the **diameter** by 2. For example, if the **diameter** is 4, the **radius** would be 2.