Question

the volume of a right circular cylinder of height 7cm is 567 pie cm^3. find its curved surface area and total surface area.​

Answer 1

Answer:

$\pi {r}^{2} h = 567\pi \\ {r}^{2} h = 567 \\ h = 7 \\ {r}^{2} (7) = 567 \\{r}^{2} = 81 \\ r = 9 \\ csa \: of \: cylinder = 2\pi \: rh \\ 2(\pi)(7)(9) \\ 126\pi \\ tsa \: of \: cylinder \: = 2\pi \: r(h + r) \\ 2(\pi)(9)(7 + 9) \\ 288\pi$

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