The original area of a face would be a^2. Now that you added b to the edge, the new area of each face would be (a+b)^2. To find how much the are increased, subtract a^2 from (a+b)^2.
So the answer is b(2a+b)
Answer:
16
Step-by-step explanation:
Answer:
Each book cost $3.55
Step-by-step explanation:
Answer:
~6.5
Step-by-step explanation:
6*6=32 7*7=49 between 6 and 7 and the middle is 6.5