When you fold an 8x11 rectangle with the crease going along the diagonal, you end up having two flaps, each only one layer of paper thick. What is the area of one of those flaps(no measuring).
Images:
https://prnt.sc/1uj6v7y
https://prnt.sc/1uj6sk0
Continued here.
https://web2.0calc.com/questions/hi-plz-help_2
+47 
