Given an equilateral triangle with side (a) equal to 12
Calculate the other relevant items in this triangle
Calculate Perimeter:
P = 3a
P = 3 x 12
P = 36
Calculate Semiperimeter s:
| s = | P |
| 2 |
| s = | 36 |
| 2 |
s = 18
Calculate Area (A):
| A = | a2√3 |
| 4 |
| A = | 122√3 |
| 4 |
| A = | 144√3 |
| 4 |
| A = | 249.41531628992 |
| 4 |
A = 62.35382907248
Calculate Bisector
| ha-ma-ta = | a√3 |
| 2 |
| ha-ma-ta = | 20.784609690827 |
| 2 |
ha-ma-ta = 10.392304845413
Calc. Circumscribed Circle Radius
| R = | a√3 |
| 3 |
| R = | 20.784609690827 |
| 3 |
R = 6.9282032302755
Calculate Inscribed Circle Radius
| r = | a√3 |
| 6 |
| r = | 20.784609690827 |
| 6 |
r = 3.4641016151378
P = 36
s = 18
A = 12
s = 18
A = 12
What is the Answer?
P = 36
s = 18
A = 12
s = 18
A = 12
How does the Equilateral Triangle Calculator work?
Free Equilateral Triangle Calculator - Given a side (a), this calculates the following items of the equilateral triangle:
* Perimeter (P)
* Semi-Perimeter (s)
* Area (A)
* altitudes (ha,hb,hc)
* medians (ma,mb,mc)
* angle bisectors (ta,tb,tc)
* Circumscribed Circle Radius (R)
* Inscribed Circle Radius (r)
This calculator has 1 input.
* Perimeter (P)
* Semi-Perimeter (s)
* Area (A)
* altitudes (ha,hb,hc)
* medians (ma,mb,mc)
* angle bisectors (ta,tb,tc)
* Circumscribed Circle Radius (R)
* Inscribed Circle Radius (r)
This calculator has 1 input.
What 3 formulas are used for the Equilateral Triangle Calculator?
P = 3a
s = ½P
A = a22√3/4
s = ½P
A = a22√3/4
What 6 concepts are covered in the Equilateral Triangle Calculator?
- altitude
- segment from the vertex of a triangle ot the other side of the triangle
- area
- Number of square units covering the shape
- equilateral triangle
- A triangle with 3 equal sides
- perimeter
- The distance around a shape or object
- radius
- Distance from the center of a circle to the edge
C/2π - triangle
- a flat geometric figure that has three sides and three angles
