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Area and Volume

SAT Math· difficulty 4/5

A right circular cylinder has lateral surface area 40π40\pi and radius 44. What is its height?

  • A

    55

    check_circle
  • B

    88

  • C

    33

  • D

    1010

Explanation

2πrh=40π⇒8πh=40π2\pi rh=40\pi\Rightarrow 8\pi h=40\pi, so h=5h=5.

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