Area refers to the amount of space within a 2D shape.

Surface area is the amount of space on the outside of a 3D object.

Area of a RectangleEdit


Area of a TrapeziumEdit


a and b are the lengths of the two parallel sides.

Area of a CircleEdit


Surface Area of a SphereEdit


Surface Area of a ConeEdit

The curved surface area only is: pi*r*l

l is the distance from the outer edge of the circular base to the tip of the cone.

The whole surface area is: pi*r(l+r)

See alsoEdit

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