The figure consist of two triangles and three rectangles.
The dimension of rectangles are,
Rectangle 1:
Length L = 10 cm
Width W = 7 cm
Rectangle 2:
Length L = 8 cm
Width W = 7 cm
Rectangle 3:
Length L = 6 cm
Width W = 7 cm
The dimesions of triangles are,
Triangle 1 and triangle 2:
Base b = 6 cm
Height h = 8 cm
Determine the suraface area of closed body.
[tex]\begin{gathered} A=10\cdot7+8\cdot7+6\cdot7+\frac{1}{2}\cdot6\cdot8+\frac{1}{2}\cdot8\cdot6 \\ =70+56+42+24+24 \\ =216 \end{gathered}[/tex]
Thus surface area of figure is 216 square centimeter.
