math
posted by verkesia .
a new sidewalk will be 5ft wide 160ft long and 3ins deep.how many cubic yards of concret is needed?

5 * 160 * 0.25 = ______ cubic feet
Change to cubic yards with this calculator.
http://www.metricconversions.org/volume/cubicfeettocubicyards.htm 
a new sidewalk will bee 6 feet wide 160 feet long and filled to a depth of inches 0.75 foot with concrete, How many cubic yards of concrete are needed