14.

label Mathematics
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May 14th, 2015

The surface area of a cone is pi*r^2 + pi*r*s, here r=26cm and s=20cm, so

S = pi*26*(26+20) = pi*26*46 = approx. 3757,34 (square cm)

May 14th, 2015

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May 14th, 2015
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May 14th, 2015
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