Posted by faizel on Wednesday, January 2, 2013 at 10:23am.
a solid sphere of radius r is melted and cast into the shape of a solid cone of height r, then the radius of the base of cone is

maths  Reiny, Wednesday, January 2, 2013 at 10:27am
volume of sphere = (4/3)πr^3
let the radius of the cone be x
volume of cone
= (1/3)πx^2 r
(1/3)π x^2 r = (4/3)π r^3
x^2 r = 4 r^3
x^2 = 4r^2
x = 2r

maths  hermando, Friday, January 11, 2013 at 7:49am
pass a plane through a cube of edge 8 inches so that the section formed will be a regular hexagon. through each side of the hexagon pass two planes , one plane containing one of the two vertices of the cube which are farthest away from the plane of the hexagon, the other plane containing the diagonally opposite vertex of the cube. find the volume of the solid bounded by these planes.

maths  hermando, Friday, January 11, 2013 at 7:51am
pls help me to solve the problem.the answer is 384 cubic inches..how come?

maths  hermando, Friday, January 11, 2013 at 7:53am
pls answer my problem..the answer is 384 inches cubic.what will be the process?
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