Question

solve this fast if you know ​

Answer 1

Answer:

$total \: surface \: area \: of \: cylinder = 2\pi \: r(r + h) \\ 3300 = 2 \times \frac{22}{7} \times r(r + 12.5) \\ \frac{3300 \times 7}{2 \times 22} = r(r + 12.5) \\ 75 \times 7 = {r}^{2} + 12.5r \\ \\ {r}^{2} + 12.5r - 525 = 0 \\ by \: solving \: above \: equation \: we \: can \: find \: r$

Answer 2

Answer:

hey here is your answer in above pics

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