Using the data given below, calculate the wheel load stresses at $($a$)$ interior $($b$)$ edge and $($c$)$ corner regions of a cement concrete pavement using Westergaard's stress equations. Also determine the probable location where the crack is likely to develop due to comer loading.

Whed load. $P=5100Kg$

Modulus of elasticity of cement concrete, $E=3\mathrm{.}1{10}^{5}k\frac{g}{c}{m}^2$

Pavement thickness. $h=18cm$

Poisson's ratio of conerete, $=0\mathrm{.}15$

Modulus of subgrade reaction, $K=6\mathrm{.}0k\frac{g}{c}{m}^3$

Radius of contact area, $a=15cm$