Question 1091360
800 x 80 = 8000 x 8 = 64000 cubic centimeters
64000/100 = 640 cubic meters
640 x 2.5 = your answer (use your calculator or do it in your head, I'll do it slowly for you: 2 times 640 = 1280 plus 0.5 640 = 320; 1280+320 = 1600 ton is the weight of the column)