Answer:
3600 pounds 
Explanation:
One cubic foot of a chemical weighs 60 pounds.
1 ft³ of chemical = 60 pounds 
We need to find how many pounds in the container whose dimension 6 ft, 4 ft and 2.5 ft 
l = 6 ft
b = 4 ft 
h = 2.5 ft 
Volume of box = lbh
 = 6 x 4 x 2.5 
 = 60 ft³
As we are given 
 1 ft³ of chemical = 60 pounds 
60 ft³ of chemical = 60 x 60 = 3600 pounds 
Hence, In container contains 3600 pounds of chemicals.