What is the total surface area of the pyramid?

3. 255.6 square centimeters

Step-by-step explanation:

To find the total surface area of a pyramid, we need to find the surface area of the 4 sides plus the base. Note that there are also two different types of sides for the 4 sides where one is bigger than the other.

Smaller sides = 2 × × 6 × 12.6

                     = 75.6

Bigger sides = 2 × × 10 × 12

                   = 120

Base = 10 × 6

        = 60

Total surface area = 75.6 + 120 + 60

                              = 255.6

ur mom gae no homo

d. corresponding side lengths in similar triangles are proportional in length.

step-by-step explanation: