How does tripling the side lengths of a triangle affect its perimeter?

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Answer 1 · 2017-06-24T13:31:40

I tried this:

You know that the perimeter #P# of a triangle of sides of lenghts #a,b and c# is:

#P=a+b+c#

f you triple the lengths you get that the new perimeter #P'# is:

#P'=3a+3b+3c#

collect #3#:

#P'=3(a+b+c)=3P#

so the new perimeter is three times the old.