Two types of shipping boxes are shown below.

Box F

3 ft

3 ft

3 ft

Box J

2ft

4.5 ft

3 ft

What is the difference in the surface areas, in square feet of the two boxes?

A2

B3

C21

D30

B. 3 square feet

Step-by-step explanation:

The formula for surface area is:

2lw+2lh+2wh

Box F's surface area is just plugging in those variables

2 (3) (3) + 2 (3) (3) + 2 (3) (3) = 54

Box J's surface area is the same way

2 (2) (4.5) + 2 (2) (3) + 2 (4.5) (3) = 57

The difference is 57-54=3

The answer is B. 3 square ft