Trigonometry question on the picture it’s pretty straightforward:) any help appreciated!

Jack is considering a list of features and fees for denver bank. jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Ineed no it anyone can see this