Laura bought some books. She spent a total of $71 after a discount of $5 off of her total purchase. Each book cost $4. How many
books did she buy?
1 answer:
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Answer: OPTION D
Step-by-step explanation:
The formula for calculate the surface area of a rectangular prism is:
Where w is the width, h is the height and l is the length.
You can see in the figure attached that:
l=3.4ft
w=3ft
h=4.1ft
Therefore, when you substitute these values into the formula you obtain that the surface area is:
