ANSWER
B) 7,488 cubic cm
Step-by-step explanation
We can make a diagram that will help understand this problem better:
The sides of the rectangle are 64cm and 36cm. It is said that we have to cut 6cm squares from each corner, therefore from those dimensions se have to subtract 12cm (6cm from each side). In the end, we have the box shown in the picture above. The volume is:
![V=24cm*52\operatorname{cm}*6\operatorname{cm}=7,488\operatorname{cm}^3]()