Answer:
The cake is larger by 8 in^3
Explanation:
The volume equals the product of the length of all 3 sides, or length * height * width
The volume of the cake is 8in*5in*2in which equals 80 in^3
The volume of the brownie tin is 9in*4in*2in which is 72 in^3
Clearly, the cake has more volume since 80 in^3 > 72 in^3
It is greater by the brownie tin by 80 in^3 - 72 in^3, or 8 cubic inches.