Asquare pyramid is 9 ft tall and has a volume of 507 cubic feet. how long is each side of the base of the pyramid?

13ft

Step-by-step explanation:

V= 1/3 x B x h

507=1/3 x B x 9

B= 169ft²

B= b x b

169= b x b

b = 13ft

Change it a bit cause this is my answer that i put for this test i did it 2.

Part A: 2 triangles and 1 rectangle. 

Part B: The length, in units, of side AB, is 4 and side AE is 5. 

Part C: The area of figure ABCDE is 31 units. 
To find the rectangle multiply L x H which is 4 x 5 = 20 
Then for triangle 1 multiply L x H x 0.5 which is 3 x 5 x 0.5 = 7.5 
Finally, for triangle 2 multiply L x H x 0.5 which is 7 x 1 x 0.5 = 3.5 
Then you add all the shapes together to find the area of the figure ABCDE.