Answer:
Option B
Step-by-step explanation:
step 1
Find the number of cubes in the prism

step 2
Find the volume of one cube
The volume of one cube is equal to

where
b is the length side of the cube
we have

substitute


step 3
To find out the volume of the prism , multiply the volume of one cube by the number of cubes
so


simplify

It’s D. I’ll show you in the picture below
isosceles
Step-by-step explanation:
it just is trust me
Perimeter of a rectangle = 2L + 2W
Perimeter = 39
W = 8.5
we plug those into the perimeter equation and get
2L + 2(8.5) = 39
simplify
2L + 17 = 39
subtract 17 from both sides
2L = 22
divide both sides by 2
L = 11
therefore the length of the sheet of paper is 11 in.