Area and Volume

SAT Math· difficulty 3/5

A cylinder has radius 44 and height 55. What is its total surface area?

  • A

    80π80\pi

  • B

    56π56\pi

  • C

    40π40\pi

  • D

    72π72\pi

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Explanation

SA=2πr2+2πrh=32π+40π=72πSA=2\pi r^2+2\pi rh=32\pi+40\pi=72\pi.

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