Posted by **Kylie** on Sunday, July 24, 2011 at 10:03pm.

the perimeter of an isosceles triangle is 21 meters. the length of one side is 3 meters longer than the length of the other two sides. find the length of each side.

- math -
**Reiny**, Sunday, July 24, 2011 at 11:27pm
sides : x, x , 21-2x

"the length of one side is 3 meters longer than the length of the other two sides"

This is ambiguous

1st interpretation:

----> 21-2x = x+x+3

-4x = -18

x = 4.5

sides are 4.5, 4.5, and 12

This is not a possible triangle.

To have a triangle the longest side must be less than the sum of the other two sides,

2nd interpretation:

---> 21-2x = x+3

-3x = -18

x = 6

sides are 6, 6, and 9

This one works.

## Answer this Question

## Related Questions

- Algebra II - Two sides of a triangle are equal in length. The length of the ...
- algebra - an isosceles triangle is one in which two sides are the same length. ...
- algebra - As isosceles triangle has two sides of equal length. If the third side...
- algebra, - This isosceles triangle has two sides of equal length, a, that are ...
- alegbra - This isosceles triangle has two sides of equal length, a, that are ...
- Algebra - The perimeter of an equilateral triangle is 7 in. more than the ...
- Math - Two sides of a triangle have the same length. The third side measures 4 ...
- Alegaba 2 - Two sides of a triangles are equal in length. the length of the ...
- Melanie - A right triangle has a hypotenuse of length 13 meters and one side of ...
- Math - The side of a square is 10 meters longer than the side of an equilateral ...

More Related Questions