Question 1193705: The length of the sides of a triangle are consecutive whole numbers. If its perimeter is 12cm, what are its dimensions? Answer by ikleyn(52778) (Show Source):
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The length of the sides of a triangle are consecutive whole numbers. If its perimeter is 12cm, what are its dimensions?
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3, 4 and 5.
It is right-angle triangle.
It is so FAMOUS, that practically every student knows it.
To solve formally, notice that the sum of three consecutive integer numbers is 12,
the middle integer is one third of the sum, i.e. 12/3 = 4, which gives you the same answer.
