Help with 6 and 7 I rlly need help

Answer:
6) 295.2 feet squared. 7) 2, 4, 7, 8
Step-by-step explanation:
6)
[tex]a = 16.4 \times 18[/tex]
[tex]a = 295.2[/tex]
7)
[tex]728 \div 2 = 364[/tex]
[tex]728 \div 4 = 182[/tex]
[tex]728 \div 7 = 104[/tex]
[tex]728 \div 8 = 91[/tex]