Answer:
Explanation:
Step 1: Calculate the slant height of the pyramid.
Slant Height = √(6.9^2 + 8^2) = 10.1 cm
Step 2: Calculate the lateral surface area of the pyramid.
Lateral Surface Area = 4 * (1/2 * 6.9 * 10.1) = 176.5 cm^2
Step 3: Calculate the total surface area of the pyramid.
Total Surface Area = Lateral Surface Area + Base Area
Total Surface Area = 176.5 cm^2 + (1/2 * 6.9 * 8) = 227.7 cm^2