Question 5Four congruent rectangles are assembled as shown. Each small rectangle’s long side is $9 \,\mathrm{cm}$. Find the combined perimeter. $36 \,\mathrm{cm}$$42 \,\mathrm{cm}$$45 \,\mathrm{cm}$$48 \,\mathrm{cm}$$54 \,\mathrm{cm}$