Stan has a fish tank at home. He knows it’s height , h, is one inch Ed’s than twice the width, w, and the length, l, of the fish tank is seven inches longer than the height

The answers are 20,30,80,180,960,890,1230,4560. on the first row

Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )