1. A parcel delivery service will deliver a package only if the length plus the girth (distance around) does not exceed 100 inches. Find the maximum volume of a recatngular box with quare ends that satisfies the delivery company's requirement.
2. A fence is to be built enclose a rectangular area of 270 square feet. The fence along three sides is to be made of material that costs 6 dollars per foot, and the material for the fourth side costs 12 dollars per foot. Find the lengh and width of the enclosure that is most economical to construct.
Different numerical values, but see here for the general method.
Originally Posted by abcdef