Answer:
174 squares
Explanation:
I would start by finding the surface area of the rectangular prism. You can use 2(wl+hl+hw).
2(wl+hl+hw)
2(3*5+9*5+9*3)
2(15+45+27)
2(87)
174 cm^2
The area of squares 1 cm edges would be 1 because 1*1=1, so you could find how many of them would fit on the surface area by dividing 174 by 1, which equals 174.