Answer:
- (B)Finding the product of 9, 10, and 9.
- (D)810
Step-by-step explanation:
Given a rectangular prism shaped storage shed with dimensions:
9 feet by 9 feet by 10 feet
Volume of a rectangular prism =Length X Width X Height
Tammy can find the volume of the storage unit by finding the product of 9, 10, and 9.
Therefore:
Volume of the storage shed= 9 X 9 X 10 
Therefore, to completely fill the storage shed, Tammy would need 810 unit boxes that each measure 1 cubic foot