Summation Using For Loop

I am having a hard time solving the following problem:

Here is what I have (for n=10) and I cannot for the life of me get the correct output, which should be 3.14 with a bunch of numbers after it.

clc,clear
format long
ESpi=0; 
for k=0:10
   ESpi=ESpi+[(-1)^k/(2*k+1)^3];
end
ESpi

Answer 1

[David Goodmanson]

Hi vaninea, Don't forget that you are calculating pi^3/32, not pi! Espi equals (appoximately) pi^3/32, so you need to work back from that in order to get to(approximately) pi.

[vaninea]

Thanks. Your hint helped a lot. I added a small piece of code to my last line and was able to get the answer. Much appreciated!