The top of the Washington Monument is a triangular pyramid with a triangle base. Each triangular face is 58 feet tall and 34 feet wide and covered with white marble. About how many square feet of marble cover the faces of the pyramid?

Question

Mathematics

Anna Perkins

20 September, 16:11

The top of the Washington Monument is a triangular pyramid with a triangle base. Each triangular face is 58 feet tall and 34 feet wide and covered with white marble. About how many square feet of marble cover the faces of the pyramid?

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Answers (1)

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Rubi Ashley · Answer 1

So 4 triangular faces of the pyramid will have total area

= 4 * 12 * base * height = 4 * 12 * 34 * 58f t2 = 3944f t2

So 3944f t2 of marble cover the faces of the pyramid.