A right circular cone is 5.4 cm high and radius of its base 2 cm. It is melted and recast into another right circular cone with radius of base as 1.5 cm . find the height of the new cone
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V.of cylinder
= pie r^2h
= pie *2*2*5.4
=pie*21.6.
V.of cone
=1/3 pie r^2 *h
=1/3 pie 2.25 *h
=pie 0.75 *h
V,of cylinder =v.of cone
Pie 21.6=pie0.75 *h
h=21.6/0.75
h=28.8 cm.
IS IT CORRECT!
PLEASE COMMENT.
= pie r^2h
= pie *2*2*5.4
=pie*21.6.
V.of cone
=1/3 pie r^2 *h
=1/3 pie 2.25 *h
=pie 0.75 *h
V,of cylinder =v.of cone
Pie 21.6=pie0.75 *h
h=21.6/0.75
h=28.8 cm.
IS IT CORRECT!
PLEASE COMMENT.
karishma28:
no it is wrong
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