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pashok25 [27]
3 years ago
9

What is the surface area of the faces of the pyramid?

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
8 0
The area of a triangle is (base*height)/2
Therefore: 12*10=120/2=60. Since there are three triangles then you multiply 60 by three. 60*3=180
Since the triangle in the middle is equilateral the height is 10. (10*10)/2=50
180+50=230
The answer is 230 inches²

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