Given
Area of base = 10.8 square cm
Length of prism = 11 cm
Find
Surface area of the triangular prism
Explanation
As we know the surface area of triangular prism is given by
perimeter of base * length of figure + 2(Area of base)
now , we find perimeter of base
perimeter = sum of all sides = 5 + 5 + 5 = 15 cm
so, surface area =
[tex]\begin{gathered} 15\times11+2\times10.8 \\ 165+21.6 \\ 186.6cm^2 \end{gathered}[/tex]
Final Answer
Therefore , the correct answer is C .
