Thursday
June 20, 2013

# Homework Help: geometry

Posted by Mary on Sunday, May 8, 2011 at 8:13am.

The length of each edge of a trianglar tent if 8 ft. ( 3 sides and a bottom)
(a) Find the area of each face
(b)Find the total surface area of the four faces

• geometry - Reiny, Sunday, May 8, 2011 at 8:26am

If I understand your question, your tent is a pyramid with the triangles being equilateral.
The height of an equilateral triangle of length 8 ft is
4√3 ft
area of one triangle = (1/2)(8)(4√3) = 16√3

so total area = 3(16√3) + 64 or 48√3+64 ft^2
= 147.14 ft^2 appr.

• geometry - Mary, Sunday, May 8, 2011 at 8:34am

Thank you

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