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keisanHigh-precision calculations for everyday life and work

Area of a Rectangle

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Calculate the area and perimeter of a rectangle using its width and height.
Width a
Height b
Area S 
Perimeter L 
\(\normalsize Rectangle\\ (1)\ area:\hspace{50px} S=ab\\ (2)\ perimeter:\ L=2a+2b\)

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Area of a Rectangle | Keisan