Answer:
Additional cubes added to the rectangular prism= 72cubes
Volume of new rectangular prism = 108in³
Step-by-step explanation:
The question is incomplete without the diagram and not clear to understand.
Let's determine how to find answers to the above using the following:
The diagram used for solving the question has been attached.
From the diagram, the base of the rectangular prism has length =6inches and width = 6inches
Height = 1inch
If 2more layers are added, then height becomes 3inches sinch the two additional layer has same dimensions as the base.
The bottom layer has 6 by 6 dimension
Area = 6×6 = 36in²
Since 1 cube = 1 inch
Number of cubes in the base = 36cubes
Since two layers were added, Additional cubes added to the rectangular prism = 2×36 = 72cubes
Volume of rectangular prism = length×breadth×height
= l×b×h
dimension of new rectangular prism
Length = 6in
Breadth = 6in
Height = 3in
Volume of new rectangular prism = 6×6×3
Volume = 108in³
