Program for Area Of Square

A square is a flat shape, in one plane, defined by four points at the four corners. A square has four sides all of equal length, and four corners, all right angles (90 degree angles). A square is a kind of rectangle. 
 

👁 Image

Examples : 
 

Input : 4
Output :16

Input :8
Output :64

 

Formula 

 

Output : 
 

16

Time complexity : O(1) 
Auxiliary Space : O(1)

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