Based on the way Harry cut the cake, the following is true:
The cross section was cut parallel to the base of the cake which means that it will maintain the same shape as the base. The base of a rectangular prism, is a rectangle.
= Area of one cake + Area of second cake
= (6 x 4) + ( 6 x 4)
= 24 + 24
= 48 inch²
Find out more on rectangular prisms at https://brainly.com/question/128724.