In geometry, the lateral surface of a solid is the face or surface of the solid on its sides. That is, any face or surface that is not a base. Lateral surface area means the area of 4 sides. Take for example a cube. Consider the edge of the cube as a. Area of one square = a*a = a2. Thus the lateral surface of a cube will be the area of four faces: a*a*4 = 4a2.
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“Night City was like a deranged experiment in Social Darwinism, designed by a bored researcher who kept one thumb permanently on the fast-forward button. Stop hustling and you sank without a trace, but move a little too swiftly and you’d break the fragile surface tension of the black market; either way, you were gone ... though heart or lungs or kidneys might survive in the service of some stranger with New Yen for the clinic tanks.”
—William Gibson (b. 1948)