Can someone please solve this

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asked Aug 14, 2018 205k views

1 Answer

John Rees · Answer 1 · 2018-08-20T21:05:08+0000

check the picture below

the triangular pyramid is really just 4 triangules, stacked up to each other at the edges

so get the area of each triangle, sum them up, and that's the surface area of the triangular pyramid.

Can someone please solve this

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