First answer is right
Base is 8
Height is 9
9x8=72
72/2=36
36 units ^2
To have a different rectangle with the same perimeter you just have different measurements. If you need an example let me know!
1/12 I think I’m sorry if it isn’t
I don't know which one you want but here
Exact form: x=9/10
OR
Decimal form
x=0.9
