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The length of each side of an equilateral triangle is decreased by 3 inches,so the perimeter is now 21 inches.what is the original length of each side of the equilateral triangle
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The length of each side of an equilateral triangle is decreased by 3 inches,so the perimeter is now 21 inches.what is the original length of each side of the equilateral triangle

User Sirelon
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2 Answers

6 votes
The Perimeter then would be 30 Inches!

:V
User RizJa
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7.9k points
7 votes
an equilateral triangle has equal sides

so if you divide the perimeter by 3 you would get the length for all of the sides

21/3 = 7

since it said it was decreased by 3 inches you add 3 inches back

7 + 3 = 10

so the original length of one side of the triangle is 10 inches
User Jinto Joseph
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9.0k points
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