a solid frustum made of copper with r1=4cm, r2=5cm and h=20cm is melted to form cones of radius =7/2cm and h=20cm. find the number of cones formed.
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anjali3834:
thanks but, this question answer is 4
how?
h is the same and hence gets cancelled
pi and 1/3 gets cancelled
remaining are the sum of the squares of the two radii of frustum the product of the two radii divided by the square of radius of cone
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