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.
