MCQ
The product of the roots $(\alpha \times \beta)=$ ______ .
- A$\frac{-b}{a}$
- B$\frac{-c}{a}$
- C$\frac{b}{a}$
- ✓$\frac{c}{a}$
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Class interval
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$3-6$ | $6-9$ | $9-12$ | $12-15$ | $15-18$ | $18-21$ |
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Frequency
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$2$ | $5$ | $21$ | $23$ | $10$ | $12$ |
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Assertion (A)
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Reason (R)
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The number of coins of $1.75\ cm$ in diameter and $2\ mm$ thick from a melted cuboid $(10\ cm \times 5.5\ cm \times 3.5\ cm)$ is $400.$
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Volume of a cylinder of base radius $r$ and height $h$ is given by $\text{V}=(\pi\text{r}^2\text{h})$ cubic units. And volume of a cuboid $= (l \times b \times h)$ cubic units.
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