Sam is building a new deck. his decking material is sold by the square foot. at a cost of $3.90 per square foot, how much will it cost sam to build a deck that is 18 feet by 14 feet?

That’d be 9 years or something

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 : )