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Answer:
D. total area should be 46.5 cm²
Step-by-step explanation:
total area: square area + triangle area
: length * length + [tex]\frac{1}{2}[/tex] * base * height
: 6 * 6 + [tex]\frac{1}{2}[/tex] * 6 * 3.5
: 36 + 10.5
: 46.5 cm²