Answer:
r = -31
Step-by-step explanation:
The picture is how I solved it.
Option 1! If you expand the bracket and simplify.
D
Sq rt of 8 is sq rt of 4 times sq rt of 2
The Surface area of the cube will be 433.5 square feet. Then the correct option is C.
<h3>What is a surface area of a cube?</h3>
Suppose that: The side length of the considered cube is L units. Then, we get:
Surface area of that cube = 6L² square units.
Bella is wrapping a cube shape box that measures 8.5 inches along each side.
The edge length of the cube is 8.5 meters.
Then the Surface area of the cube will be
Surface area = 6 x 8.5²
Surface area = 6 x 72.25
Surface area = 433.5 square feet
The Surface area of the cube will be 433.5 square feet.
Then the correct option is C.
More about the surface area of the cube link is given below.
brainly.com/question/13789496
#SPJ1
11,513 is the answer I really don't know how to write it all out sorry
