Answer : The area of the 12 equal long pieces is, 
Step-by-step explanation :
As we are given that:
Width of rectangle = 
Length of rectangle = 
When student cuts of 3/4 from width and 3/4 from height then the new width and length of rectangle will be:
New width = 
New length = 
Now student cuts in 12 equal long pieces.
New length = 
New width = 
Now we have to calculate the area of the 12 equal long pieces.
Area of rectangle = Length × Width
Area of rectangle = 
Area of rectangle = 
Therefore, the area of the 12 equal long pieces is, 