[填空题]
A bakery has designed a bkrino+m848k a ox to deliver their speciality birthday +cm+ 3 bu8dlo3kokiv6cakes. The box has a rectangular prism base, with a rectangular pyramid top, as illustrated in the diagram below with dimensions shown.u3vdk 3bc+ ko+6ilom8 After the cake is put into the box, the outside of the box is completely wrapped in colourful gift paper.
Point O shown on the diagram is the midpoint of the base of the pyramid.
1.Find the value of a shown in the diagram; the slant height of one of the pyramid faces. cm
2.Find the total outer surface area of the box to be wrapped in gift paper. $cm^2$
