1 From a thin piece of cardboard 30 in by 30 in square corners are cut out so that the sides can be folded up to make a box What dimensions will yield a box of maximum volume What is the maximum volume Round to the nearest tenth if necessary A 20 in x 20 in x 10 in 4000 in 3 C 10 in x 10 in x 10 in 1000 in 3 B 20 in x 20 in x 5 in 2000 in3 D 15 in 15 in 7 5 in 1687 5 in3 M