Question

the lateral surface area of a hollow cylinder is 8448cm2. it is cut along it's height and formed a rectangular sheet of width 66cm find its perimeter
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Answer 1

Answer:

388

Step-by-step explanation:

$2\pi \: rh = 8448 \\ 2\pi \: r = 66 \\ h = 128 \\ perimetre = 2(66 + 128) \\ 388cm$

here's the answer