The angle between height and slant height of a cone,whose radius is 15 cm is 40°.find the volume of the cone
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so it's basically given that the semi vertical angle is 40°
so we know tan40= r/h
0.839=15/h
h=15/0.839
h=17.87
l=√h2+r2
l=√319.339+225
l=√544.339
l=23.33
volume of cylinder is
1/3*22/7*225*17.87
=22/7*75*17.87
=29485.5/7
=4212.2147cm3
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