You end up with 5m+6. (An equation rather than a number, since m is not a number, so the final answer cannot be a number).
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The order of operations is: P (parentheses) E (Exponents) M (Multiply) D (Divide) A (Add) S (Subtract)
5 feet 6 inches = 1.67 meters
Add the areas of the six surfaces.
Multiply m by m.
Remember there are 1000 mm in 1 m To change 'mm' to 'm' multiply by its reciprocal. algebraically mm X 1/m