The figure shows (Can't show the picture because I don't have) A solid consisting of a pyramid of a height $28\mathrm{cm}$ fastened to a cuboid of height $40\mathrm{cm}$ and a square base of sides $30\mathrm{cm}$ each. Find the total surface area of the solid.
Can anyone help me find the formula for the question? I think there is no need for picture nor the question but anyway...