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Rectangle Perimeter
A rectangle has two pairs of equal sides. If the length is 6 and the width is 3, the perimeter is 6+3+6+3 = 18. You can also think of it as 2 x length + 2 x width = 2x6 + 2x3 = 12+6 = 18.
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Mathematics — Perimeter: Measuring Around Shapes
A rectangle has two pairs of equal sides. If the length is 6 and the width is 3, the perimeter is 6+3+6+3 = 18. You can also think of it as 2 x length + 2 x width = 2x6 + 2x3 = 12+6 = 18.