Area Formulas:

Square: area=s²

The area of a square is the length of a side squared.

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Rectangle: area=L*W

The area of a rectangle is the length multiplied by the width.

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Circle: area=π*r²

The area of a circle is pi (about 3.14) times the radius squared.

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Triangle: area=0.5*b*h

The area of a triangle is one half the base times the height.

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Trapezoid: area=0.5*(b1+b2)*h

The area of a trapezoid is one half the sum of the bases times the height.