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How do i get the surface area.

Guest May 26, 2017
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 #1
avatar+90602 
+2

You cannot find the surface are because it is not 3 dimensional but maybe I could find the area.

 

I think I need more info ... like maybe that it is a trapezium for example ???

Melody  May 26, 2017
 #2
avatar+77064 
+2

 

 

I/m assuming that we have a trapezoid

 

The height  = sqrt (9^2 - 7^2 )  =  sqrt ( 32)  =  4sqrt (2)

 

So....the surface area is

 

height * (  sum of the bases)   / 2  =  

 

4 sqrt (2) * ( 5 + 7)  / 2  =

 

4 sqrt (2)  *  12/2  =

 

4 sqrt (2)  * 6  =

 

24 sqrt (2)  dm^2     = about  33.94 dm^2

 

 

cool cool cool

CPhill  May 26, 2017

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