WALT: Use side or edge lengths to find the perimeters and areas ofrectangles, parallelograms, and triangles and the volumes of cuboids.

The best possible outcome

Problem 2 answer: 28 is the perimeter that is the lowest so the rectangle has a length of 8 and width of 6.
Problem 1 answer: 26 is the perimeter that is the lowest so the rectangle has a length of 9 and a width of 4.

Problem 3:

Problem 3 answer: 3 bags