The total surface area of the triangular prism will be 14 square centimeter.
Option C is correct.
Total surface area :
From the given diagram of triangular prism,
It is observed that, The total surface area of the triangular prism will be the summation of area of two triangle and area of large rectangle.
Area of one triangle =(1/2)*3*2 = 3 square centimeters
So that, area of both triangle =2 * 3=6 square centimeters
Area of large rectangle=(2.5+3+2.5)*1=8*1=8 square centimeters
total surface area of the triangular prism =8+6=14 square centimeters
Therefore, total surface area of the triangular prism is 14 square centimeters.
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