An external pressure p is applied on a cube at 0°C so that it is equally compressed from all sides. K is the bulk modulus of the material of the cube and $\mathrm{\alpha }$ is its coefficient of linear expansion. Suppose we want to bring the cube to its original size by heating. The temperature should be raised by $\frac{\mathrm{p}}{\mathrm{x\alpha K}}$. The value of x is