For the cube first we find the surface on one side which is 3x3=9ft^2
we have 6 sides 9x6=54ft^2
For the pyramid first we find the surface of the base which is 15x15=225in^2
next we find the surface of the sides which is 7*15/2=52.5in^2 52.5*4=210in^2
210+225=435in^2
