What error did the student make?
A student found the surface area of this rectangular pyramid.
Surface area = (12)(6) + 1/2 (12)(8) + 1/2 (6)(9.5)
= 72 + 48 + 28.5
= 148.5cmsq
O The student should have used the same value for
all of the triangular faces.
O The student added only three of the five faces.
O The student did not use the correct formula to find
the area of the triangular faces.
O The student did not find the correct area of the
rectangular base.