A circle has area = 15
Calculate Area, Circumference, Radius, Diameter
Calculate radius (r):
A = πr2
Rearranging the equation, we get:
| r2 = | A |
| π |
| r = | √A |
| √π |
| r = | √15 |
| √3.1415926535898 |
| r = | 3.8729833462074 |
| 1.7724538509055 |
r = 2.1850968611842
Calculate circumference (C):
C = 2πr
C = 2π * 2.1850968611842
C = 4.3702π or 13.7294
Calculate diameter (d):
d = 2r
d = 2 * 2.1850968611842
d = 4.3701937223683
Final Answers
r = 2.1850968611842
C = 4.3702π or 13.7294
d = 4.3701937223683
You have 1 free calculations remaining
What is the Answer?
r = 2.1850968611842
C = 4.3702π or 13.7294
d = 4.3701937223683
How does the Circles Calculator work?
Free Circles Calculator - Calculates and solves for Radius, Diameter, Circumference, and Area of a Circle.
This calculator has 1 input.
What 3 formulas are used for the Circles Calculator?
What 7 concepts are covered in the Circles Calculator?
areaNumber of square units covering the shapecirclethe set of all points in the plane that are a fixed distance from a fixed pointcirclescircumferencethe perimeter of a circle or ellipsdiameterdistance from two endpoints of a circle through the centerd = 2roriginOn a two digit coordinate plane, the point (0, 0), where the x-axis and y-axis cross.radiusDistance from the center of a circle to the edge
C/2π
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