| sphere volume | lw1990 | 4/24/12 10:58 PM | SketchUp Version:8 Can't seem to get the correct volume for a sphere..if I use the method of making two circles, using follow me to make a 3d sphere, then make group, there is no volume shown at all under entity info.If I use engineer toolbox to make |
| Re: sphere volume | lw1990 | 4/24/12 11:06 PM | it appears to be working fine for rectangles and squares and such, but anything with a curved surface seems to somehow be off by a margin which gets larger the larger size object you are drawing. what a shame this programs math is so broken that engi |
| Re: sphere volume | Jeff_Hammond | 4/24/12 11:21 PM | a group has to be 'solid' in order for it to report volume.. (if your group is a solid, it will say so in the entity info panel)you're probably leaving one of the circles inside the group which is causing it to be a non-solid.. make the sphere and gr |
| Re: sphere volume | Jeff_Hammond | 4/24/12 11:45 PM | notice in this picture, the inner sphere which was created with 12 sided circles is missing some volume when placed inside an actual sphere.. |
| Re: sphere volume | wo3dan | 4/25/12 1:08 AM | You seemed to accept 1425ft^3, which isn't accurate at all. As Jeff mentioned, the volume of the true sphere is 1436.7555......ft^3 which is (4/3)*PI*r^3 SU is very accurate in calculating volumes. Point is, what shape are you looking at? Not a t |