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 WORD PROBLEMS-GEOMETRY VOLUME 

1. A square has an area of ​​sixteen square centimeters. What is the length of each of its sides? 

The formula for the area A of a square with side length s is: 
A = s 2 

They gave me the area, so, plug this value into the area formula and see where this leads: 
16 = s 2 4 = s___________________________________________________

2. A circle has an area of ​​49 square units. What is the length of the diameter of the circle?
 
The formula for the area A of a circle with radius r is:
 A = (pi) r 2 

the radius r is half the length of the diameter d, so: 49 pi = (pi) r 2 (49 pi) / pi = [(pi) r 2] / pi 49 = r 2 7 = r
https://www.purplemath.com/modules/perimetr.htm 

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