The set is not closed
Example
-4 * -2 = 8
8 is not a negative integer
36x34= 1224cm²
(36-4)x(34-4)= 32x30= 960cm²
Area of frame= 1224
Area of picture inside frame= 960
So border = 1224-960= 264
ANSWER = 264cm²
Answer:
Todd will need 9 pint-sized containers to store 4.5 quarts of ice cream.