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4 in. If you'd like, you can use a calculator. 9 in. SA = 2πr² + 2πrh Use 3.14 for T. Find the surface area of a cylinder with a height of 9 inches and base radius of 4 inches. Do NOT round your answer.
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4 in. If you'd like, you can use a calculator. 9 in. SA = 2πr² + 2πrh Use 3.14 for T. Find the surface area of a cylinder with a height of 9 inches and base radius of 4 inches. Do NOT round your answer. SA = [?] square inches

PLEASE HELP ASAP .​

4 in. If you'd like, you can use a calculator. 9 in. SA = 2πr² + 2πrh Use 3.14 for-example-1
User Seth Moore
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1 Answer

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Answer: SA=326.56 inches

Explanation:


SA=2\pi r^2+2\pi rh\\SA=2\pi r(r+h)\\r=4 \ inches\ \ \ \ \ h=9\ inches\ \ \ \ \ \ \pi =3.14\\Hence,\\SA=(2)(3.14)(4)(4+9)\\SA=(25.12)(13)\\SA=326.56\ inches

User Kovarex
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