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19 December, 17:36

Find the surface area of a cone whose base is a circle with a 5 cm radius and whose altitude is 10 cm.

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Answers (2)
  1. 19 December, 17:56
    0
    l² = h² + r²

    l² = 10² + 5²

    l² = 125

    l = 5√5

    Surface area = πr (r + l)

    Area = 22/7 * 5 (5 + 5√5)

    Area = 550/7 * (1 + √5)
  2. 19 December, 17:58
    0
    about 254.16

    Step-by-step explanation:

    A=πr (r+h2+r2)
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