Question

length of the boundary is called
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Answer 1

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$\green\implies$$\large\bf{\underline{\red{PERIMETER}}}$

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REASON:-

Perimeter is the distance around a two dimensional shape, a measurement of the distance around something; the length of the boundary.

MORE TO KNOW:-

Length Of Circle = Circumference.

Length Of the Axis Of Cylinder = Height.

$\boxed{I \:Hope\: it's \:Helpful}$

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