A tabletop measures 315 cm by 90 cm. The perimeter of the top of the table is:

4 m 5 cm

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8 m 10 cm

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24 m 30 cm

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None of these

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Solution

The correct option is B 8 m 10 cm
Length of top of the table = 315 cm
Breadth of top of the table = 90 cm
Perimeter = 2(315 + 90) = 2(405) = 810 cm
= 8 m 10 cm

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