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Find the surface area of this triangular prism.

 

 Jul 19, 2020
 #1
avatar+1034 
+4

Let us do one side at a time. Since the bases/sides are equal, we will start with that.

From here, we will apply the formula b(h)/2. Since the sides are equal, we do not need to divide by 2. So, that equals 24(10).

Doing the rectangles gives us 24(11) for the larger one, and 10(11) for the smaller one.

The top rectangle will give us 26(11).

From here, all you need to do is 24(10)+24(11)+10(11)+26(11). I bet you could do it from here!

 Jul 19, 2020
edited by ilorty  Jul 20, 2020
 #2
avatar+26675 
+2

....and there is a   26 x 11 in there too !

ElectricPavlov  Jul 19, 2020
 #3
avatar+1034 
+2

ah right, oops! Clear triangles always confuse me...

ilorty  Jul 20, 2020

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