In the pyramid above, each triangular face
has the same area, and the base MNPQ is
a square that measures 8 centimeters on
each side. If the length of RS = 6
centimeters, what is the surface area of
the pyramid excluding the base?
A. 48 sq cm
B. 96 sq cm
C. 128 sq cm
D. 160 sq cm
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