A circle of radius = 2 or diameter = 4 or circumference = 12.57 meters has an area of: 1.257 × 10-5 square kilometers (km²)
Q. What is the circumference of the radius is 4m?
25.13 m exactly or limited to de precision of this calculator (13 decimal places). Note: for simplicity, the operations above were rounded to 2 decimal places and π was rounded to 3.14.
Table of Contents
- Q. What is the circumference of the radius is 4m?
- Q. What is the area of a 4cm circle?
- Q. What is the radius of a 10m circle?
- Q. What is the radius of 10 cm?
- Q. What is the diameter of a circle that is 10 units?
- Q. What is the diameter of a circle that is 2 units?
- Q. What is the radius of the circle unit?
- Q. What is the radius of a circle is 5 units?
Q. What is the area of a 4cm circle?
What is the area of a circle with diameter 4 cm
| Result: The area of a circle with diameter 4 is 12.57 | |
|---|---|
| Formulae: | |
| r = 2 d = 4 C = 12.6 | A = πr2 = π(d2)2 A = C24π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter |
Q. What is the radius of a 10m circle?
The diameter of a circle is the distance from one edge to the other, passing through the center. It is twice the radius….Diameter of a Circle.
| Diameter | m2 | ft2 |
|---|---|---|
| 10.0 m | 78.54 | 845.4 |
| 10.1 m | 80.12 | 862.4 |
| 10.2 m | 81.71 | 879.5 |
| 10.3 m | 83.32 | 896.9 |
Q. What is the radius of 10 cm?
What is the area of a circle with radius 10 cm?
| Result: The area of a circle with radius 10 is 314.2 | |
|---|---|
| Formulae: | |
| r = 10 d = 20 C = 62.8 | A = πr2 = π(d2)2 A = C24π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter |
Q. What is the diameter of a circle that is 10 units?
What is the area of a circle with diameter 10 units?
| Result: The area of a circle with diameter 10 is 78.54 | |
|---|---|
| Formulae: | |
| r = 5 d = 10 C = 31.4 | A = πr2 = π(d2)2 A = C24π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter |
Q. What is the diameter of a circle that is 2 units?
Answer: 3.5 feet. Step-by-step explanation: divide 7 ft.
Q. What is the radius of the circle unit?
In mathematics, a unit circle is a circle of unit radius—that is, a radius of 1. Frequently, especially in trigonometry, the unit circle is the circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane.
Q. What is the radius of a circle is 5 units?
What is the area of a circle with radius 5 units?
| Result: The area of a circle with radius 5 is 78.54 | |
|---|---|
| Formulae: | |
| r = 5 d = 10 C = 31.4 | A = πr2 = π(d2)2 A = C24π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter |
