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What is the perimeter of a rectangle that is 2m 10cm by 45cm?
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What is the perimeter of a rectangle that is 2m 10cm by 45cm?

User Donnald Cucharo
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P=2l+2w\\ l=2\text{ m }10\text{ cm}=210 \text{ cm}\\ w=45\text{ cm}\\\\ P=2\cdot210+2\cdot45\\ P=420+90\\ P=510 \text{ cm}
User Hanchen Jiang
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