Hello Guest! :D
First side: 10*5 =50 cm^2
Second side: 6*8/2=24 cm^2
Third side: 6*8/2=24 cm^2
Fourth side: 6*5=30 cm^2
Fifth side: 8*5=40 cm^2
Add all of these up to get the desired answer! :D
In short, the answer is 143cm2.
This is how I did it:
First, we must find the surface area of every face.
10x5 = 50
6x8 = 48 (we can do this because both triangles are the exact same)
5x8 = 40
6x5 = 30
Now we add all this up and get 143cm2.
Hope it helps!
You did your work nicely, but I think you made a mistake adding the values! The correct answer would be 168 :D