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You have a square that has a side length of 1 centimeter. Each minute, 2 centimeters are added to the side length. After 20 minutes, what will be the difference between the area of the last square and the area of the initial square in square centimeters (do not include the units in your answer)?

 Apr 15, 2021
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Area  of  intial   square  =  1^2   =  1 cm^2

 

After  20  minutes  the   area  is     ( 1 + 20*2)^2  =  ( 41)^2  =  1641 cm^2

 

Difference   =    1641 - 1  =   1640

 

 

cool cool cool

 Apr 15, 2021

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