Question

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!!

Answer 1

• 1410 mm²

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