MCQ
Which of the following sequence is not an A.P.?
- A$0.5,2,3.5,5 \ldots$
- ✓$22,26,28,31 \ldots$
- C$3,5,7,9, \ldots$
- D$1,4,7,10, \ldots \ldots$
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Assertion $(A)$
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Reason $(R)$
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If the radii of the circular ends of a bucket $24\ cm$ high are $15\ cm$ and $5\ cm$ respectively, then the surface area of the bucket is $545\pi\text{cm}^2.$
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if the radii of the circular ends of the frustum of a cone are $R$ and $r$ respectively and its height is $h,$ surface area is:
$\pi\big\{\text{R}^2+\text{r}^2+\text{l}(\text{R}-\text{r})\big\}$
where $\text{l}^2=\text{h}^2+(\text{R}+\text{r})^2.$
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