Mathematics, 14.07.2019 05:00 camila9022
Surface area of cylinder = 2πrh(top circular surface area not included) = 2π(r)(2r) = 4πr²imagine the top circular surface area of the cylinder moves to the circular surface of the hemisphere. surface area of hemisphere = 2πr² + πr2 = 2π(3r)² + π(3r)² = 18πr² + 9πr² = 27πr² total surface area = 4πr² + 27πr² = 31πr²
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Surface area of cylinder = 2πrh(top circular surface area not included) = 2π(r)(2r) = 4πr²imagine th...
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