35 The strength S of a rectangular wooden beam is proportional to its width times the square of its depth Find the dimensions of the strongest beam that can be cut from a 12 in diameter cylindrical log Round answers to the nearest tenth 12 A w 5 9 in d 10 8 in C w 6 9 in d 9 8 in B w 7 9 in d 10 8 in D w 7 9 in d 8 8 in 35