How many yards of sand to fill a hole 4 feet 3 inches wide and 4 feet 3 inches long and 7 feet deep?
There are 27 cubic feet in a cubic yard.
3 inches = 0.25 feet
4.25 x 4.25 x 7 = 126.4375 cubic feet.
126.4375 / 27 = 4.68287037037037 cubic yards, rounded to one decimal place, 4.7 -- edit-- Assuming that you want to fill the hole with tightly packed sand, and that the sand is bought loosely packed, you'll need to over-estimate the amount, depending on the differences involved.