Answer:
C. S.A. = 340.8 [tex]cm^{2}[/tex]
Step-by-step explanation:
Area of rectangles = 6x 12 = 72 [tex]cm^{2}[/tex]
all three have the same area - 72 x 3 = 216 [tex]cm^{2}[/tex]
Area of triangle = 10.4 x 12 ÷ 2
Since there are 2 trignles - 10.4 x 12 = 124.8 [tex]cm^{2}[/tex]
Add all sides up
S.A. = 216 [tex]cm^{2}[/tex] + 124.8 [tex]cm^{2}[/tex]
S.A. = 340.8 [tex]cm^{2}[/tex]
