zinha4304
zinha4304 zinha4304
  • 03-03-2020
  • Mathematics
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Danboghiu66
Danboghiu66 Danboghiu66
  • 03-03-2020

I assumed that the unit of measure is ft.

Front+back:

S1=2×(4×3.5/2)=4×3.5=14ft²

2 sides+base:

S2=3×(9×4)=9×12=108ft²

Total area: 14+108=122ft²

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