The total would be 38. Because you have to add 3 every month and the question ask you to add 5 months it will have to be 3x5 or 3+3+3+3+3, which would equal 15, now you just add what it oringally weighted (in this case 23) to the weight after 5 months which would have to be (23+15) 38 pounds.
Hi there! The correct answer (the statement that is not true): The volume of the smaller cone cannot be determined because it’s height is unknown. Hope this helps and have a good day :) ! ~Angel