The total surface area of the solid below is:

Explanation

Surface area of the shape = surface area of the cone excluding the surface area of the circular base + surface area of half sphere

                                                =  πrl + (4πr²)/2            (r = 28 mm, l = 40 mm)

                                                =   3518.64 + 4926.02 = 8444.6 mm²

Note: approximation may result into a slight difference in decimal points