What is the exact formula for the circumference?
What is the exact formula for the circumference?
The circumference of a circle is equal to pi times the diameter. Pi is an irrational number about equal to 3.14 . Its special quality is that it is the ratio between the circumference and diameter of every circle. The formula for the circumference of a circle is C=πd , and since d=37 , we know that C=37π .
What is the circumference of 10cm?
31.42cm
What is the circumference of 3?
Circumference & Areas
| Size in Inches | Circumference Inches | Area in Square Inches |
|---|---|---|
| 2 1/2 | 7.854 | 4.909 |
| 2 3/4 | 8.639 | 5.940 |
| 3 | 9.425 | 7.069 |
| 3 1/4 | 10.210 | 8.296 |
How do you find the diameter of a circle with the area?
Calculate the Diameter of a Circle, from Its Area
- Divide the area (in square units) by Pi (approximately 3.14159). Example: 303,000/3.14159 =
- Take the square root of the result (Example: 310.56). This is the radius.
- Now double the radius to get the diameter (Example: 621.12 meters).
What is the diameter of a 24cm circle?
Circles (basic)
| Diameter | Circumference(approx) | Circumference |
|---|---|---|
| 8 cm | 24 cm | 25.12cm |
| 20 cm | 60 cm | 62.8cm |
| 40 cm | 120 cm | 125.6cm |
| 3m | 9m | 9.42m |
What is the radius of a 8 foot circle?
What is the area of a circle with a DIAMETER of 8 feet (radius of 4 feet)?…Area of a 8 Foot Circle.
| 50.265 | square feet |
|---|---|
| 7,238.2 | square inches |
| 5.5851 | square yards |
| 0.0011539 | acres |
| 4.6698 | square meters |
What is the radius of a 22cm circle?
A circle of radius = 11 or diameter = 22 or circumference = 69.12 cm has an area of: 3.801 × 10-8 square kilometers (km²) 0.03801 square meters (m²) 380.1 square centimeters (cm²)
What is the radius of a circle is 3 units?
if the radius is 3, just think of the radius as the half of the diameter, so your answer would be the diameter is 6.