engineering recuitment Bihar ITI CAT Mock Test 2025 Quantitative Aptitude Mensuration Solid Figures

જે શંકુની ત્રિજ્યા \(\frac{r}{4}\) અને તિર્યક ઉંચાઈ 4l છે તેનું કુલ પૃષ્ઠફળ શું છે?

1
4πr(l + r)
2
\(\pi r\left(l+\frac{r}{4}\right)\)
3
\(\pi r\left(l+\frac{r}{16}\right)\)
4
8πr(l + r)
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