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Please help! I need the surface area for both. Absurd answer are not tolerated. Thanks if you help!

Please help I need the surface area for both Absurd answer are not tolerated Thanks if you help class=

Respuesta :

mhanifa

Answer:

Figure 1

  • Perimeter of base = 5 + 5 + 8 = 18 ft
  • Height = 7 ft
  • Base area = 1/2(8)(3) = 12 ft²

Surface area:

  • S = 18*7 + 2*12 = 150 ft²

Figure 2

Surface area of cube:

  • S = 6a² = 6(2.5)² = 37.5 m²

Surface area of prism:

  • S = 2(11 + 9)(7) = 280 m²

Overlapping area:

  • S = 2.5² = 6.25 m²

Surface area of composite figure:

  • S = 280 + 37.5 - 2(6.25) = 305 m²

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