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A glass prism on a chandelier is 57 millimeters long. A base of the prism is an
equilateral triangle with side lengths of 8 millimeters and a height of about 5.2
millimeters. What is the approximate surface area of the prism?
Pleasee help!!

Respuesta :

mhanifa

Answer:

  • 1410 mm²

Step-by-step explanation:

Given triangle prism with:

  • a = 8mm,  h = 5.2 mm, l = 57 mm

Total surface area:

  • S = Pl + ah = 3al + ah = a(3l + h)
  • S = 8(3*57 + 5.2) = 1409.6 mm² ≈ 1410 mm²

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