Rich Assessment Task: WALT:  Use side or edge lengths to find the perimeters and areas of rectangles, parallelograms, and triangles and the volumes of cuboids.
Problem 1:   4 Length, 9 Width
Problem 2:   8 Length, 6 Width 
Problem 3:    3 bags  
The best possible outcome
Problem 3: 
 
Awesome work and answers Xanthe:-) but don't forget to explain why for Problem 1.
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