(60 x 1.5 x 13/12) / 27 = 3.61 cubic yards
87.5 cubic feet
Volume = 12 cubic feet = (12 / 27 ) 0.444 cubic yard
26 square feet.
Volume of concrete required, in square feet = 27 x 4 x 0.5 = 54 cu ft, which is 2 cubic yards, so 80 dollars/pounds/yen/ringgit or whatever.
6,400 ft3
128
87.5 cubic feet
you would need 37.33 yards of concrete or 38 to be safe
147 cubic feet of cement are required.
Volume = 12 cubic feet = (12 / 27 ) 0.444 cubic yard
26 square feet.
Essentially, you need three and a third cubic yards of concrete to replace that quantity to those measurements - so if the cost of a cubic yard of concrete is 30, multiply it by 3.333 and you get 100
Volume of concrete required, in square feet = 27 x 4 x 0.5 = 54 cu ft, which is 2 cubic yards, so 80 dollars/pounds/yen/ringgit or whatever.
about 18 cubic feet.
6,400 ft3
0.246914 cu. yards (6.666667 cu. ft ) of concrete is needed.
14.6944... sq ft = 46x46/144