SOLUTION: The base of an isosceles triangle is 3cm less than the length of the equal sides. If the perimeter of the triangle is 36cm, find the length of each side.

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Question 128873This question is from textbook Beginning Algebra
: The base of an isosceles triangle is 3cm less than the length of the equal sides. If the perimeter of the triangle is 36cm, find the length of each side. This question is from textbook Beginning Algebra

Answer by solver91311(24713) About Me  (Show Source):
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The length of an equal side is x, so the length of the base is x - 3. The perimeter is the sum of the lengths of the sides, so:

x+%2B+x+%2B+%28x+-3%29=+36

3x-3=36

3x=39

x=13

The equal sides are 13 cm and the base is 10 cm.