It is 18because you have to count the blocks
Answer:
Step-by-step explanation:
Perimeter = 2(l + w)
l = 8.5cm, perimeter = 24cm
24 = 2(8.5 + w)
Dividing through by 2
24/2 = 8.5 + w
12 = 8.5 + w
W = 12 - 8.5
W = 3.5cm
Not enough info. But assuming it’s a rectangular, area = length * width
3/4*11/12 = 33/48 = 11/16 square feet
Let me know if u can see this picture