+0  
 
-2
60
1
avatar

Prism A and prism B are similar. The volume of prism A is 27 cubic units while the volume of prism B is approximately 512 cubic units. If the surface area of prism B is 128 square units, what is the surface area of prism A?

 Mar 30, 2020
 #1
avatar+111330 
+1

The scale factor  from A : B =  ∛27 :  ∛512    =   3  :  8

 

The  surface  area  of  A =  ( scale factor)^2  * surface area  of B =    (3/8)^2 * 128 = 

 

9/64 * 128  =

 

9 * ( 128/64)  =

 

9 * 2  =

 

18  square units

 

 

cool cool cool

 Mar 30, 2020

9 Online Users