I think all you have to do is solve that. 81m squared
Step-by-step explanation:
Since, diagonal of a parallelogram bisects it in two triangles of same area.
Hence, area of parallelogram ABCD will be twice the area of triangle ABD.

The answer would be 28/240, but if you were to simplify it would be 7/60
If that 40% is how many are occupied then- 100 are occupied 150 are vacant
if that 40% is how many are vacant then- 100 are vacant and 150 are occupied
Answer:
Micheal surveyed 60 students.