Answer:
204.4m
Explanation:
formula for SA of a rectangle is 2lw+2lh+2hw
so it would be 2(6x5) +2(6x3)+2(5x3)=126m
formula for SA of a triangle is bh+2ls+lb
so it would be 5x2+2(6x3.2)+6x5=78.4m
then add 78.4+126=204.4m
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