The answer I believe is D. BC is congruent to DF
Answer:
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Step-by-step explanation:
Answer:
D or A
Step-by-step explanation:
Answer:
Step-by-step explanation:
we know that
The given figure is a triangular pyramid
The volume of the triangular pyramid is equal to
where
B is the area of the triangular base
h is the height of the pyramid
Find the area of the base
The base is an equilateral triangle
Applying the law of sines to determine the area
Remember that
substitute
Find the volume
we have
substitute