Area Problem D

Teacher's Version 2
Quickstart Guide
[list=1][*]length : l(u)[/*][*]width : w(v)[/*][*]path width: path(t)[/*][*]slider : r[br][/*][*]back to the cross pattern: Q=E[/*][/list]
Student's Version
https://www.geogebra.org/m/zuvyrtag

Information: Area Problem D