Answer:
45 ft2
Step-by-step explanation:
So the total surface area= area of square part of pyramid + area of all 4 triangles
The area of square is L2 and area of triangle is 1/2*L*h
From figure L (length) is 3 and h (height) is 6
Now you just need to put these values into the formula above and your answer would be 45
Sorry for the lengthy explanation and hope this helps
