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The Average Arm Span For A Two Year Old Should Be Roughly The Same As Its Height.
The length of one arm is about 40% of your height
Mechanical advantage= effort arm length/ load arm length For Example Effort arm=120 cm Load arm length= 40 cm MA-120/40 = 3
In square each arm's length is equal. If we indicate each arm's length by 'a'. Then area of square =(a)2
Usually not.