Sarah is designing a triangular pyramid made of all glass to go on top of a building. All of the

Sarah is designing a triangular pyramid made of all glass to go on top of a building. All of the faces of the pyramid have a height of 17 feet and a base of 20 feet.

Note: Figure is not drawn to scale.
How much glass is needed?
A.
340 sq ft
B.
680 sq ft
C.
2,040 sq ft
D.
1,360 sq ft


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