Given an equilateral triangle with side (a) equal to 10, calculate the other relevant items in this triangle
Calculate Perimeter:
P = 3a P = 3 x 10 P = 30
Calculate Semiperimeter s:
s =
P
2
s =
30
2
s = 15
Calculate Area (A):
A =
a2√3
4
A =
102√3
4
A =
100√3
4
A =
173.20508075689
4
A = 43.301270189222
Calculate Bisector
ha-ma-ta =
a√3
2
ha-ma-ta =
17.320508075689
2
ha-ma-ta = 8.6602540378444
Calc. Circumscribed Circle Radius
R =
a√3
3
R =
17.320508075689
3
R = 5.7735026918963
Calculate Inscribed Circle Radius
r =
a√3
6
r =
17.320508075689
6
r = 2.8867513459481
P = 30 s = 15 A = 10
What is the Answer?
P = 30 s = 15 A = 10
How does the Equilateral Triangle Calculator work?
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.
What 3 formulas are used for the Equilateral Triangle Calculator?