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An equaliateral triangle has a perimeter of 51 inches. How long is each side? *

User A Webb
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An equilateral triangle has all sides equal so that if one side is x, the other 2 sides are equally x

so perimeter is addition of all sides of the triangle

and that will be x +x+x = 3x

3x= perimeter------(1)

from the question the perimeter = 51 inches-----(2)

so that equating 1 and 2 yields

51 inches = 3x

51/3 = 3x/3

x =17 inches

User Mitchf
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