What is the surface area of the square pyramid

128 feet squared

Step-by-step explanation:

you multiply 4 by 4 to get 16 ,

then you multiply 7 by 4 and get 28,

also multiply 28 by 4 and get 112 ,

finally add 112 and 16 to get 128

Part of the formula for compound interest is dividing the interest state by the number of compounds per year ( for monthly that is 12)

The amount also get raised to the amount of time multiplied by the compounds.

The formula would be A = p(1+ 0.1399/12)^(12t)