Hi, can anyone help me with this problem.

The radius of a rectangular cone is "r", and height "h", by what value "x" must "r" be increased and "h" be decreased to keep an identical volume?

Thanks.

Luke.

Hi, can anyone help me with this problem.

The radius of a rectangular cone is "r", and height "h", by what value "x" must "r" be increased and "h" be decreased to keep an identical volume?

Thanks.

Luke.

The radius of a rectangular cone is "r", and height "h", by what value "x" must "r" be increased and "h" be decreased to keep an identical volume?

Thanks.

Luke.

- little_dragon
**Posts:**226**Joined:**Mon Dec 08, 2008 5:18 pm-
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i think U do like this:The radius of a rectangular cone is "r", and height "h", by what value "x" must "r" be increased and "h" be decreased to keep an identical volume?

V

V

put them equal

div out the 1/3 & 2pi

rh=(r+x)(h-x)

rh=rh+xh-rx-x^2

solve for x