I want to say its
6ab12 + 2ab5
Start with

Add 2x to both sides:

Subtract 21 from both sides:

Divide both sides by 5. Since it is positive, we don't have to change the inequality sign:

So, the answer is 
60 because 2:4 is 1/2, and when you divide by a fraction, you multiply by the reciprocal (2/1 instead of 1/2) which would be 60 in this case.
Answer:
the answer is c 29.04 meters squared
Step-by-step explanation:
first you multiply 2.2 by 2.2 to get 4.84 then you multiply that by 6 to account for all of the faces