Answer
Success!
P = 39
s = 19.5
A = 13
s = 19.5
A = 13
↓Steps Explained:↓
Given an equilateral triangle with side (a) equal to 13
Calculate the other relevant items in this triangle
Calculate Perimeter:
P = 3a
P = 3 x 13
P = 39
Calculate Semiperimeter s:
| s = | P |
| 2 |
| s = | 39 |
| 2 |
s = 19.5
Calculate Area (A):
| A = | a2√3 |
| 4 |
| A = | 132√3 |
| 4 |
| A = | 169√3 |
| 4 |
| A = | 292.71658647914 |
| 4 |
A = 73.179146619785
Calculate Bisector
| ha-ma-ta = | a√3 |
| 2 |
| ha-ma-ta = | 22.516660498395 |
| 2 |
ha-ma-ta = 11.258330249198
Calc. Circumscribed Circle Radius
| R = | a√3 |
| 3 |
| R = | 22.516660498395 |
| 3 |
R = 7.5055534994651
Calculate Inscribed Circle Radius
| r = | a√3 |
| 6 |
| r = | 22.516660498395 |
| 6 |
r = 3.7527767497326
P = 39s = 19.5
A = 13
Take the Quiz Switch to Chat Mode
Related Calculators: Isosceles Triangle | Triangle Solver and Classify Triangles | Polygons