You can put this solution on YOUR website! Find the surface area of a right triangle prism with legs measuring 3 and 4 and a height of 10
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Each end is a 3, 4, 5 right triangle.
Each end has an area of bh/2 = 3*4/2 = 6 sq units.
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The other 3 sides are 3*10, 4*10 & 5*10 sq units.
Add them.