Question

Please help me so I can start packing my stuff for vacation

Answer 1

I'll guess P is the perimeter, the sum of the edge lengths.

In centimeters

I get 4 + 4 + 4 + 4 for the sides of the isoscles triangles

5 + 5 + 2.8 + 2.8 for the rectangular base

5 for the apex/top

P = 4+4+4+4+5+5+2.8+2.8+5=36.6 cm

Not sure why the exact answer isn't there, but first choice seem best.

Get packing.