This is somewhat a Physics question, but ends of being more of an algebra/geometry-related question.
Anyway, there is a cube that radiates with a power $P_0$ and it is "cut" into two pieces. These two pieces radiate energy with a power of $P_1$. Find the ratio of $P_1$/$P_0$.
Heat transfer for radiation is defined as P = $\delta$Q/$\delta$T = e $\sigma$ A $T^4$
Everything is constant between the two cubes (except for their total surface area, obviously)
The ratio ends up being $P_1$/$P_0$ = $A_1$/$A_0$
My problem is that it doesn't given any details about the size before or after the cube is cut. I tried every geometric comparison I could think of, I always ended up with 1/2 or 2. The answer supplied is 4/3. Any hints?