goldennjoyy goldennjoyy
  • 22-01-2022
  • Mathematics
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(PLEASE HELP, ONLY ANSWER IF YOU KNOW) what is the surface area of this design 10in 10in 5 in 5in 8in 2in

PLEASE HELP ONLY ANSWER IF YOU KNOW what is the surface area of this design 10in 10in 5 in 5in 8in 2in class=

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mhanifa
mhanifa mhanifa
  • 22-01-2022

Answer:

  • C. 440 in²

Step-by-step explanation:

Area of top and bottom faces:

  • 2(10*10) = 200 in²

Area of front and back faces:

  • 2(10*10 - 8*5) = 2(100 - 40) = 2(60) = 120 in²

Area of left and right faces:

  • 2(10*10 - 8*5) = 2(100 - 40) = 2(60) = 120 in²

Total surface area:

  • S = 200 + 120*2 = 440 in²

Correct choice is C

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