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OpenStudy (geometry_hater):
PLEASE HELP Find the surface area of a cone with a diameter of 13 and a slant height of 5. (use 3.14 for pi)
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OpenStudy (anonymous):
r=6.5,l=5 surface area= pi r l + pi r^2 = pi r(r+l) now, substitute value of each
OpenStudy (geometry_hater):
whered 6.5 come from
OpenStudy (anonymous):
radius= half of diameter = 13/2 =6.5
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