Question

what is the total surface what is the total surface area of the following cylinder given the radius and height
(1)r 7.7cm,h 10cm
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Answer 1

2πr(r+h)
$2 \times 22 \times 1.1 \times 7.7 + 10 \\ 44 \times 1.1 \times 17.7 \\ 48.4 \times 17.7 \\ 856.68cm { \\ \}^{2}$