A parcel delivery service will deliver a package only if the length plus girth (distance around) does not exceed 120 inches. (A) Find the dimensions of a rectangular box with square ends that satisfies the delivery service's restriction and has maximum volume. What is the maximum volume? (B) Find the dimensions (radius and height) of a cylindrical container that meets the delivery service's restriction and has maximum volume. What is the maximum volume? (A) The dimensions of the rectangular box are | | in. (Use a comma to separate answers as needed.) The maximum volume is (B) The radius of the cylinder is | in. (Type an exact answer, using x as needed.) The height of the cylinder is in. (Type an integer or a simplified fraction.) The maximum volume is (Round to the nearest cubic inch as needed.)