It depends. What shape is it? And is it equilateral or not?
In effect an equilateral triangle is made up of two right angle triangles joined together so use Pythagoras' theorem to find the height:- 182-92 = 243 and the square root of this will be the height of the equilateral triangle which is about 15.588 cm
Perimeter = 4*4.5 = 18 feet
The perimeter of a square with a side measuring 4.5 cm is 4 times 4.5 = 18 cm
Each side is 72/4 = 18 and its area is 18*18 = 324 square in.
3 x 18 = 54
The perimeter would be 18 cm.
6 inches
Find the area of an equilateral triangle if its perimeter is 18 ft
6 and 3/8
18 inches and it is an equilateral triangle
Area equals 15.59
Given a perimeter of 18 units, the resulting altitude is 5.2 (5.19615) units.
18
Let's express the side length of an equilateral triangle, a, in term of the height h.a = (1/3)(h)(sq.root of 3)The perimeter equals to 3a. So we have:3a = 3[(1/3)(h)(sq.root of 3)] = (h)(sq.root of 3)] = 18(sq.root of 3)
perimeer of the triangle = sum of all the sides = 18 +18+11= 47 cm hence perimeter is 47 cm
It depends. What shape is it? And is it equilateral or not?