Perimeter is the length of a path that surrounds or outlines a shape. Area is the size that can be o

Question

Perimeter is the length of a path that surrounds or outlines a shape. Area is the size that can be occupied by a flat shape.

Accepted Answer

Square: $P=4l,\ A=l^2$ Rectangle: $P=2l+2h,\ A=lh$ Circle: $P=2\pi r=\pi d,\ A=\pi r^2=\frac{\pi d^2}{4}$ Semicircle: $P=\pi r+2r,\ A=\frac{1}{2}\pi r^2$ Triangle: $P=a+b+c,\ A=\frac{1}{2}bh$

Perimeter and Area of Common Plane Figures

Perimeter and Area of Common Plane Figures

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