Question

Help me with this question please!!
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Answer 1

A = 2 pi R^2 + 2 pi R h total surface area

R^2 = 48 2 pi R = 8 * 6^1.2 given

56 pi 6^1/2 - 2 pi R^2 = 2 pi R h f rom first formula

28 * 6^1/2 / R - R = h divide by 2 pi r

28 * 6^1/2 / R = 28 * 6^1/2 / (4 3^1/2) = 7 * 2^1/2

h = 7 * 2^1/2 - 4 * 3^1/2