The are of his backyard is 10.4 times 15.83 or 164.632 yd^2 the sod piecs are 1.33 by 1.33 or 1.78 yd^2 so divide 164.632 by 1.78 or 164.632/1.78=92.5 pieces of sod if he is buying the sod in pieces, he will have to buy 93 pieces because he can't buy 1/2 sod
