The formula of an area of a square:

a - a side
We have 
substitute:

Used:

Answer: 8ac+12b+4
Step-by-step explanation: Simplify the expression.
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12/15 = x/100
Multiply 12 x 100 to get 1,200/15 is 80.
Because 25 x 4 = 100, you divide 80 by 4.
Your answer is 20.
Answer:
Question 2:
45 pages 700 pages
-------------- = -------------
1 hour X hours
1 x 700= 700
700/ 45= 15 and 5/9
15 and 5/9 hours
Question 3:
= 88.33 lbs