If `r` and `R` and the respective radii of the smaller and the bigger semi-circles then the area of the shaded portion in the given figure is: (FIGURE) `pir^2\ s qdotu n i t s` (b) `piR^2-pir^2\ s qdotu n i t s` (c) `piR^2+pir^2\ s qdotu n i t s` (d) `piR^2\ s qdotu n i t s`
She will get 23 books. So, first, you take the shipping away to get $93.05, then you divide $93.05 by $3.95 which equals 23.55 and you can't have half a book; so it's 23!
