Answer:
I can't explain here since I can't write numbers.
Step-by-step explanation:
40 unit squared
10*8=80
80/2=40
1/3
X={0,12,23}
Y={3,12,15}
X \ Y = { 0 , 23}
X/Y means the element should be only in X. We have remove the element in X if it is in Y
In this 0 and 23 is only in X
12 is X and Y. So it wont come in X/Y
