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IgorLugansk [536]
3 years ago
8

Solve. x^2+ 5x-2=0 A. B. C. D.

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
4 0

the answer is........ B

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All of the edges of a regular triangular pyramid have length 12. A frustum of the pyramid has height half of that of the pyramid
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1) The volume of the frustum is 27·(√3)·h

2) The surface area the frustum is 24·h + 54·√3

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1) A frustum of the regular triangular prism is a portion of the triangular prism

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The area of the triangular face, A = (√3/4)·a²

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When

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The volume of the top half, V₂ = 9·(√3)·h

The volume of the frustum = V - V₂ = (36·√3)·h - 9·(√3)·h = 27·(√3)·h

The volume of the frustum = 27·(√3)·h

2) The surface area of the triangular side of the frustum is given as follows;

A = 36·√3- 9·(√3) = 27·(√3)

The surface area the frustum, F_A = 2×27·(√3) + 2 ×6 ×h + 12×h = 24·h + 54·√3

The surface area the frustum = 24·h + 54·√3

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So because it says NOT a way....I think it's A...Maybe I'm wrong but whatever.
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