How is (4/27)*(3)^3 = 4? When I evaluate it as a first step, I reduce the (3)^3 into 9, thus generating: (4/27) * 9. With a little basic multiplication, I have: 36/27, or 4/3. Which is obviously not equal to 4! Am I right or wrong? Where did I make an error? Take a look if you please at the answer the author of this article has given as regards the volume of an exemplary cone at the beginning of his page. Did he, or did he not make an error in his final calculation? Or am I wrong? My conclusion is that the volume is 4/3(pi).