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Please Explain I don't know where to start

 
 Jun 6, 2021
 #1
avatar+174 
+1

Bottom face is 8*4=32

2 triangle's area is 4*3*1/2*2=12

 5*8=40. 

back face is 8*3=24

32+12+40+24=108

 
 Jun 6, 2021
 #2
avatar+119772 
+2

Thr front and  back are composed of two    right triangles with legs of 3 and 4

Their combined surface area =   3 * 4  = 12

 

The  right side is a 3 x 8  rectangle =   24

 

The bottom is a  4 x 8  rectangle  =  32

 

The  top is a 5 x 8  rectangle = 40

 

Total surface area =   12  + 24 +  32  +  40    =    108  units^2

 

 

 

cool cool cool

 
 Jun 6, 2021
edited by CPhill  Jun 6, 2021

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