All three sides are the same size
The answer is 1. its a cube, 2. the area is 294 Square CM
Answer:

Step-by-step explanation:
The like terms are the ones containing the variable 'c'. They are combined by adding their coefficients.
Working just with the coefficients of c, we have ...

Then the simplified expression is ...
(2 3/4)c +(3 1/8)c +7
= (5 7/8)c +7