A drinking glass open at the top is in the shape of a frustum of a cone of height 24cm
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h=24
R=9
r=2
volume=(refer volume formulae)
=1/3*22/7*(81+4+18)
=22/21*103*24
=18128/7=2589.714 cm3
l=sq.root of 576+49
=25
surface area=csa of frustum+base area
=pie*(R+r)*l + pie*r*r
= 22/7*279=876.857cm2
R=9
r=2
volume=(refer volume formulae)
=1/3*22/7*(81+4+18)
=22/21*103*24
=18128/7=2589.714 cm3
l=sq.root of 576+49
=25
surface area=csa of frustum+base area
=pie*(R+r)*l + pie*r*r
= 22/7*279=876.857cm2
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