It's the length times the width times the height.
No that is the volume!
The surface area of a three dimensional object is easy to calculate if it has rectangular surfaces (like a cube) and slightly more complicated if it does not but is a regular solid (like a tetrahedron or dodecahedron) (one with all the sides the same size)
Any irregular two dimensional object can be broken up into tiny squares and the area of each and every square added together.
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The surface area is the area of every face of a 3D object, such as a cube or sphere. Area usually refers to a flat object, such as a circle or rectangle.
whats the object
Surface area
Surface area
To find the area of a object you do width x highth for a rectangle. You multiply on side of the object 4 times to get the area of a square. To find the area of a trapizoid, the formula is, 1/2 times highth (base 1 plus base 2).