Answer:
54
Step-by-step explanation:

Answer:
its 7/9
Step-by-step explanation:
you just have to flip the fractions
Find the area of the squares.
4 ×4 = 16
Find the area of the wall.
20 × 10 =200
Divide 200 by 16.
200 ÷ 16 = 12.5
You need 12.5 squares.