Question

Determine the surface area of a cylinder if the diameter is 2 inches and the height is 21 inches. Round your answer to the nearest hundredth. (Use )

Answer 1

heya! ^^

given ,

★ diameter of cylinder = 2 inches

`\therefore \: radius = (2)/(2) = 1 \: inch \\`

★ height of cylinder = 21 inches

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`surface \: area \: of \: cylinder = 2\pi \: r(r + h) \\ \\ \dashrightarrow \: 2 * 3.14 * 1(1 + 21) \\ \\ \dashrightarrow \: 2 * 3.14 * 22 \\ \\ \dashrightarrow \: 3.14 * 44 \\ \\ \dashrightarrow \: 138.16 \: inches {}^(2)`

hope helpful :D