2.  The length of the professional football field (without the end zones) is 100 yards, and the height of the great pyramid is 481ft.  1yd=3ft 481/3=160.3yds  In comparison the great pyramid is 60.3 yds. higher than the football field is in length.

3.  V=(1/3)x (area of the base) x height.  (1/3 )x( 756)^2 x 481=91,636,272 cubic ft  1 cubic yard = 27 cubic feet  91,636,272/27=3,393,936 cubic yards.

4.  1 stone = 1.5 cubic yards  3,393,936/1.5=2,262,624  In this pyramid 2,262,624 limestone blocks were used to construct the great pyramid.

5.  Based on a University of Chicago Study:  1 stone = 2.5 minutes  2,262,624 x 2.5 = 5,656,560 minutes  1 hour = 60 minutes  5,656,560/60 = 94,276 hrs  12 hours = 1 working day  94,276hrs/12 = 78,563 12-hour work days  365 days = 1 year  7,856.3/365 = 21.5 years  It took approximately 22 years to build the great pyramid.

6.  V=(1/3) x (area of the base) x height  V= (1/3) (120)^2 x 980 = 4,704,000 cubic feet  The Great Pyramid with volume 91,636,272 cubic feet is greater in size than the Eiffel Tower with volume 4,704,000 cubic feet.