Mar built a sandcastle that measures 19 feet by 11 ft and dug a moly around it after words she decided to change the castle size masking it 12 ft by 24 ft how much longer will the new moat be than the old one

12 ft. more length of moat will be required.

Step-by-step explanation:

Initially, the sandcastle measured 19 ft by 11 ft and the length of the moat around it will be the perimeter of the castle.

So, initially, the moat was of 2(19 + 11) = 60 ft long.

Now, Mar decided to change the castle size as 12 ft by 24 ft.

Therefore, the length of the moat around it will be 2(12 + 24) = 72 ft. long.

Hence, (72 - 60) = 12 ft. more length of the moat will be required. (Answer)

17

step-by-step explanation: