Answer:
2.4
Step-by-step explanation:
Hello!
You have to find the area of the prism and the pyramid
rectangular prism is lwh
Put in the values you know
15 * 5 * 7 = 525
For a prism you use

Put in the values you know

Multiply
975/3
Divide
325
Add the values you know
325 + 525 = 850
The answer is D)

Hope this helps!
The messurerments on a ruler and or to determine on a graph
For this case we assume that the photo album is rectangular in shape and therefore the fabric too. By definition, the area of a rectangle is given by:

Where:
a: It is the length of the rectangle
b: It is the width of the rectangle
According to the problem data we have to:

Substituting:

We clear "a":

Thus, the length of the fabric is 
ANswer:
The length of the fabric is