Answer:
Question 4: 20 + 6 + 6 + 12 + 16 = 60 
Question 5: 144 + 90 + 90 + 48 + 48 = 420 
Question 6: 78.28 + 78.28 + 88.58 + 27.09 + 27.09 = 299.32 
Step-by-step explanation:
Hope this helps!
Answer:
18x +9h
Step-by-step explanation:
Such problems are tedious, but not difficult. The trick is to avoid making mistakes in the algebra.

The area is 645504 square feet
1,387 because you just add all the bricks (421+623+343)