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You simply have to measure all the sides of the oblong and add them together.

If the opposite sides of it are equal (making it a rectangle), then you just need to measure the two different sides and add them together, then multiplying the result by 2.

perimeter = a + b + c +d

or

perimeter = 2(a+b)

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14y ago
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Q: How do you work out perimeter of an oblong?
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