The sum of the numbers $$436.32,227.2,$$ and $$0.301$$ in the appropriate significant figures is:

 1 $$663.821$$ 2 $$664$$ 3 $$663.8$$ 4 $$663.82$$
Subtopic: Â Significant Figures |
Â 66%
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The mass and volume of a body are $$4.237~\text{grams}$$ and $$2.5~\text{cm}^3$$, respectively. The density of the material of the body in correct significant figures will be:
1. $$1.6048~\text{grams cm}^{-3}$$
2. $$1.69~\text{grams cm}^{-3}$$
3. $$1.7~\text{grams cm}^{-3}$$
4. $$1.695~\text{grams cm}^{-3}$$

Subtopic: Â Significant Figures |
Â 84%
From NCERT
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The numbers $$2.745$$ and $$2.735$$ on rounding off to $$3$$ significant figures will give respectively,

 1 $$2.75$$  and $$2.74$$ 2 $$2.74$$  and $$2.73$$ 3 $$2.75$$ and $$2.73$$ 4 $$2.74$$ and $$2.74$$
Subtopic: Â Significant Figures |
Â 69%
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The length and breadth of a rectangular sheet are $$16.2$$ cm and $$10.1$$ cm, respectively. The area of the sheet in appropriate significant figures and error would be, respectively,

 1 $$164\pm3~\text{cm}^2$$ 2 $$163.62\pm2.6~\text{cm}^2$$ 3 $$163.6\pm2.6~\text{cm}^2$$ 4 $$163.62\pm3~\text{cm}^2$$
Subtopic: Â Errors |Â Significant Figures |
Â 61%
From NCERT
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