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A balloon is an oval so perimeter of an oval is:

Perimeter = 2π√(a² + b²)/2

So for a balloon with 'a' being 25cm and 'b' being 15cm (kind of average)

Perimeter = 2π 10.60660171779821

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Samrudh Sudarshan

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1mo ago
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Wiki User

14y ago

it depends on what type of measurement you are using

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Destiny Solominow

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3mo ago

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Q: What is the average circumference of a balloon?
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