Question

find total surface area of cylinder books if its base radius is 9 cm and its height is 14 cm​

Answer 1

Step-by-step explanation:

A=2πrh+2πr2

A=2·π·9·14+2·π·92

A≈1300.61936cm²

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Answer 2

$surface \: area \: of \: cylinder = 2\pi \times rh + 2\pi \times {r}^{2} \\ = 2\pi \times r(h + r) \\ = 2 \times \frac{22}{7} \times 9(14 + 9) \\ = \frac{2 \times 22 \times 9 \times 23}{7} \\ = 1301.14 \: (approx)$