Posted by **Pat** on Thursday, October 28, 2010 at 8:19pm.

The side of a square is 10 meters longer than the side of an equilateral triangle. The perimeter of the sqaure is 3 times the perimeter of the triangle. Find the length of each side of the triangle.

- Math -
**jai**, Thursday, October 28, 2010 at 9:41pm
represent unknowns using variables:

let x = length of a side of equilateral triangle

let x+10 = length of a side of square

*recall that perimeter of any polygon is the sum of the lengths of its sides,,

since square has 4 sides with equal lengths, and equilateral triangle has 3 sides with equal lengths:

P,square=4(x+10)

P,triangle=3x

thus:

4(x+10) = 3*(3x)

now simplify this, and solve for x.

## Answer this Question

## Related Questions

- Algebra - The perimeter of an equilateral triangle is 7 in. more than the ...
- Math - A pentagon is formed by putting together three identical equilateral ...
- pre-algebra - The perimeter of an equilateral triangle is 7 inches more than the...
- math - The perimeter of a square piece of land is twice the perimeter of an ...
- Math - a side of a square is 10 meters longer than the side of a equalaterial ...
- math - An equilateral triangle has a perimeter of 33 inches. What would the ...
- algebra - a triangle has a perimeter of 126 centimeters, each of the 2 longer ...
- algebra - A triangle has a perimeter of 56 centimeters. Each of the two longer ...
- algebra - A triangle has a perimeter of 112 centimeters, each of the two longer ...
- Algebra - A square and an equilateral triangle has the same perimeter. Each side...

More Related Questions