Problema Solution
If the sides of an equolateral triangle are 5s-2, 2r and r +s + 5.
1. What is s?
2. what is r?
3. find the perimeter of the triangle
4. find the area of the triangle
Answer provided by our tutors
5s - 2 = 2r
r + s + 5 = 2r
........
click here to see the system of equations solved for r and s
........
r = 9
s = 4
5*4 - 2 = 18
The perimeter is:
P = 3*18
P = 54
The area is:
A = a^2(√3/4)
In our case a = 18
A = 18^2(√3/4)
A = 140.30