B). It looks as though they factored it.
<h3><u>
Answer:</u></h3>
In order to obtain the rectangular cross-section on this cake we need to do slicing:
Parallel to the base.
<h3><u>
Step-by-step explanation:</u></h3>
We know that when slicing is done parallel to the base than we get a cross-section that is similar to the base ( i.e. of same shape and size).
Hence, here we have a cake in shape of a rectangular prism or we may say a cuboid so in order to get the rectangular cross-section we need to cut this cake parallel to the base.
Hence, the answer is:
Parallel to the base.
Let x = what amount
Rewrite 12 1/2 as 25/2.
(25/2)(x) = 10.40
Take it from here. Solve the equation for x.