Answer:
384 square cm
Step-by-step explanation:
Fabric used will be equal to the total surface of the cubical block.

This is Scientific Notation here's what you have to do:
First find the Notation:
8.23×10^5
It positive so go to the right.
=823000.
Next do the same thing but with the next Notation:
3.19×10^8
Its positive so go to the right:
=319000000.
Then compare the Notation's
823000. and 319000000.
319000000. is bigger than 823000.
So your answer is 319000000. so its United States.
Answer:
X
Step-by-step explanation:
It's a symbol (usually a letter) standing in for an unknown numerical value in an equation.