a. Let \(S^3\) be the 3-sphere, and let \(T^2=S^1\times S^1\) be the 2-torus. Compute the singular homology of \(S^3\times T^2\) using its CW-complex structure.
b. Recompute the singular homology of \(S^3\times T^2\) using the Eilenberg-Zilber and Künneth Theorems.