In general, to find the surface area of a prism (a shape with 2 bases) is Area of Base*2 + Lateral Area (Lateral area = Perimeter of bases * height)
#9 Area of base= 2×1÷2=1 *2=2 Lateral area= 2+1+2.2=5.2 5.2*3=15.6 Answer=17.6 #10 Area of Base= 120*2=240 Lateral Area=500 Answer=740 #11 Area of base=8*2=16 Lateral Area= 41.4 Answer=57.4
