Find, volume of a cube of side $$a=1.4$$×$$10-2$$ m.

Correct option is 12.7×10-6 m3

Questions

Find, volume of a cube of side $a = 1.4 \times 10^{- 2} m$ .

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2.7×10-6 m3

2.7×10-3 m3

7.2×10-6 m3

None of these

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detailed solution

Correct option is A

Volume V=a3=1.4×10-2×1.4×10-2×1.4×10-2=2.744×10-6 m3Since, each value of a has two significant figures. Hence, we will round off the result to two significant figures,V=2.7×10-6 m3

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Find, volume of a cube of side a=1.4×10-2 m.

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Find, volume of a cube of side $a = 1.4 \times 10^{- 2} m$ .