Answer:
2100
Step-by-step explanation:
Surface area is the area of all the sides
The area of the rectangular base is W x L = 30 x 30 = 900
Then to find the area of the triangles its [tex]\frac{1}{2}[/tex]bh
A = [tex]\frac{1}{2}[/tex] 30 x 20
A = [tex]\frac{1}{2}[/tex] 600
A = 300
Since there are 4 triangle faces on a pyramid we times 300 x 4 = 1200 is the area of all the triangles
Then we add the area's
1200 + 900 = 2100
Sorry if its wrong
