Raymond needs to cover the entire surface area of the square based pyramid with paper what is the minimum amount of paper he will need

408 sq ft

Step-by-step explanation: You would need to use the surface area formula SA = 1/2LP + B. Note that L is the slant height, P is the perimeter of the base, and B is the area of the base. 11 is the slant height as shown in the image above, p is 48 since you add 12 + 12 + 12 + 12, and the area of the square will be 144 since 12*12 = 144. Once you substitute the numbers in their correct place, you should get SA = 1/2 (11)(48)+144 which gives you 408 sq ft. Hope this helps!

a. 13

first I subtracted 323 and 149.5 to get 173.5 I did this beacause you want to find out how much is left, then I divided 173.5 by 13 and got 13.