This doesn’t make any sense
5000 young adults to visit the mall because the author of young adult books want to know what his/her readers prefer. So targeting young adults in a survey seems the best option as that is the type of audience her books are mainly for.
Answer: 640
Step-by-step explanation:
The scale factor is 20/5=4, so the ratio of the areas is the square of this, or 16.
Thus, the area of ABCD is 40(16)=640.