Answers

2014-01-12T22:45:23+05:30
Smalll cone is cut off at the top of parallel to the base new height of cone is 20cm
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2014-01-12T22:58:30+05:30
Volume of the cone is 1/3  \pi  x^{2} h.

We knew that height of a cone is 40cm.

Newly formed cone can be obtained by 1/64 of 1/3  \pi  x^{2} 40. which is equivalent to volume of new cone 1/3  \pi  x^{2} h.

Hence we get h, which is height of new cone is 40/64.

To get cut above the base of initial cone is 40 - 40/64.
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