Addends refer to the numbers being summed in an equation.
Their arrangement only matters if parentheses are utilized to modify the usual Order of Operations.
For example:
2 - (8 + 3) in this case, 8 and 3 must be grouped first before tackling the subtraction.
Any addition scenario without parentheses can similarly function where the grouping is irrelevant.
Response:
B: 32 cm
To clarify, one should only sum the external measurements
6+6+4+4+3+3+3+3=32 cm
