please anyone help me to do this because it is very hard
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Answer:
volume = 539 cm³
Step-by-step explanation:
T.S.A of a cylinder = 2πr (h+r) = 462 cm²
C.S.A of cylinder = 2πrh = 462 / 3 = 154 cm²
Volume = ?
2πrh = 154
πrh = 77
now, 2πr (h+r) = 462
2πrh + 2πr ² = 462
154 + 2πr ² = 462
2πr ² = 462 -154 = 308
πr ² = 154
r ² = 49
r = 7
Volume of cylinder =
πr²h = 77 * 7 = 539 cm³
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Answer:
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