6.
You are shown a square pyramid.
We assume all sides to be congruent.
The sides are triangles with base 6 and height 5.
The base of the pyramid is a square with side 6.
SA = lateral area + base area
SA = 4 * bh/2 + s^2
SA = 4 * (6)(5)/2 + 6^2
SA = 60 + 36
SA = 96 square units
7.
The perimeter is the sum of the lengths of all sides.
The figure has 6 sides.
4 lengths are given.
We need to find the lengths of 2 sides.
The vertical side to the left of the 3 cm side has length 8 cm - 4 cm = 4 cm
The horizontal side just above the 4 cm side to the left has length 5 cm - 3 cm = 2 cm.
Now we know all side lengths. We just add them.
P = 3 cm + 8 cm + 5 cm + 4 cm + 2 cm + 4 cm
P = 26 cm
