What is the perimeter of a variable?

Formulas Object Area Perimeter Variable Square a^2 4a where, a = length of side Rectangle l×b 2 (l+b) where, l = length b = breadth Circle πr^2 2πr = πd where, r = radius Triangle 1/2 bh a+b+c where, b = base h = height a,b,c = lengt … 3 more rows …
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