The surface area of a rectangular prism is 5600 mm2.
what is the surface area of this prism, measured in cm2?
a.
0.56 cm2
b.
56,000 cm2
c.
56 cm2
d.
560 cm2

To answer the problem above, use conversion factor and dimensional analysis. Every centimeters is composed of 10 millimeters. Hence, every cm^2 is composed of 100 mm^2. Solving the given,
 
                               5600 mm^2 x (1 cm^2/ 100 mm^2) = 56 cm^2.

Thus, the answer is 56 cm^2 which is letter C. 

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.