since the triangular pyramid has 4 faces and each has an area of 30 
we should multiply that by 4 , so :
What is the surface area of a triangular pyramid if each face has an area of 30 mm2?
a.
...
Mathematics, 18.08.2019 13:50 rafa3997
What is the surface area of a triangular pyramid if each face has an area of 30 mm2?
a.
90 mm2
b.
160 mm2
c.
60 mm2
d.
120 mm
Answers: 1
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