The value of x that make the square and equilateral triangle below have equal perimeters is 3.3
The perimeter of a polygon is the sum of all their sides. The perimeter of a square is 4 times the length of each side; while a triangle perimeter is three times the length of each side.
Perimeter of square = 4(7x - 8.1)
Perimeter of triangle = 3(10x - 13)
For equal perimeters:
4(7x - 8.1) = 3(10x - 13)
x = 3.3
The value of x that make the square and equilateral triangle below have equal perimeters is 3.3
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