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22 July, 02:43

Find the surface area of a cone with a radius, r, of 5cm and a slant height, l, of 5cm.

A. 134.4 cm2

B. 140 cm2

C. 157 cm2

D. 163 cm2

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Answers (2)
  1. 22 July, 03:05
    0
    A=πr (r+√h^2+r^2)

    A=π*5 (5+√25+25)

    A=π*5 (5+√50)

    A=189.61cm

    sorry u dont have answer in options

    are u sure both height and radius=5 cm?
  2. 22 July, 03:12
    0
    The answer is c 157cm2
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