Surface area growing post

Rectangular Prism:
1.LxW=area
8x2=area
16=area

2.LxW=area
1x8=area
8=area



3.LxW=area
2x1=area
2=area


Total Surface Area=Top+Bottom+Side+Side+Side+Side
Total Surface Area=16+16+8+8+2+2
Total Surface Area=52cm2






Triangular Prism:
1.bxh/2=area
2x4=area
6=area

2.LxW=area
9x4=area
36=area






3.LxW=area
2x6=area
12=area

4.LxW=area
6x2/2=area
8=area

Total Surface Area=Front+Back+Side+Side+bottom
Total Surface Area=6+6+36+12+8
Total Surface Area=62cm2

Cylinder:
1.Circumference=π x Diameter Circumference=3.14 x 4
Circumference=12.56

2.(r=d/2, r=4/2, r=2cm)
area=π r2
area=3.14x2x2 area=12.56


3.LxW=Latteral Area
12.56x12.56=Latteral Area
157.75=Latteral Area


Total Surface Area=Circle+Circle+Rectangle
Total Surface Area=12.56+12.56+157.75
Total Surface Area= 182.87cm2