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need help with these two question 

 Mar 2, 2018
 #1
avatar+100571 
+1

First one

 

New area  =  Old Area  * (Scale Factor)^2   =  30  * (3)^2  =   30 * 9   =  270  cm^2

 

 

Second one 

 

The ratio of their volumes  is  (5/3)^3   =   125 / 27  =   125 : 27

 

 

 

cool cool cool

 Mar 2, 2018

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