Have 700 s/f of yard I need to fill 4" deep with topsoil. Sold by cubic yard I assume. How many yards of topsoil do I need?
Go!
Not trying to insult anybody, just throwing some education out there to explain how its arrived-it is all about getting units the same, make it apples to apples and not apples to oranges to bananas. Multiple ways around the barn on this one to get to the final answer-
A yard is a volume measurement (length x width x height). You've already got the area measurement of length x width (700 square foot). So you just have to multiply 700 times your height of 4". But 700 is in square feet and 4 is in inches. So, convert 4" to feet, 4 divided by 12 is .333333 feet. 700 sq ft x .333333 feet= 233.3333333 cubic feet. (or, just divide 700 by 3)
Now the problem is convert 233.33 cubic feet to cubic yards.
A yard is 3'. A cubic yard is 3' by 3' by 3'. (3x3x3) or 27 cubic feet per yard.
233.33333 cubic feet divided by 27 cubic feet per yard = 8.64 yards
700/3=233.33
233.33/27=8.64
