Square Footage Calculator
Rectangle
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Rectangle Border
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Circle
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Ring
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Triangle with Edge Lengths
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Triangle with Base & Height
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Trapezoid
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Sector
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Parallelogram
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Reference:
1 acre = 43,560 square foot
1 square yard = 9 square foot
1 square meter = 10.76 square foot
1 square inch = 0.00064516 square foot