1. 1  possible duplicate of Convert decimal number to octal in Lisp â sds Nov 10 '13 at 17:28. 2  @sds Not a duplicate; the one you refer to is about a wrong use of the T symbol and does not have the reverse problem. 3  Wow, thank you very much. 4  When you use truncate and mod, you get the digits in reverse order (4 4 1).
The estimation of 1 cubic foot weighing 40 pounds is based on bags of topsoil. Some bags state a weight of 40 pounds, and some state a volume of 1 cubic foot. The dimensions of the contents are similar. Other factors determining weight are moisture content and volume of sticks, rocks and other debris.
A cubic foot of iron would weigh 491 lb. A cubic foot of copper would weigh 559 lb. Silver is even denser than copper, at 655 lb for a cubic foot. Gold is really heavy at 1206 lb for a cubic foot. When you see a movie of thieves carrying bars of gold, you know they are faking it!