Question

The surface area of a triangular pyramid is 372 m2.



If all the faces of the pyramid are congruent, what is the area of one face of this pyramid?









A.

124 m2








B.

93 m2








C.

1116 m2








D.

62 m2

Answer 1

Well, a triangular pyramid has 4 faces. It looks like this:
http://www.mathsisfun.com/geometry/triangular-pyramid.html
So we're told they are all congruent, they mean they have the same area.
We know the 'surface', means the sum of all these areas. Now just need to divide by 4 to get the area for a single face:
$$
\frac{372_{m^2}}{4} = 93_{m^2}
$$