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Question

A cube has a side of length 2.342m. The surface area and volume in correct significant figures are respectively:

A
32.90 m2,12.85m3
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B
5.49m2,12.85m3
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C
5.485m2,12.9m3
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D
5.49m2,12.9m3
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Solution

The correct option is A 32.90 m2,12.85m3
The side of the cube is expressed in 4 significant figures.
So, area and volume also contains 4 significant figures.
Hence, option (A) is correct.
Area =6a2=32.90 m2
Volume =a3=12.85 m3

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