We are given a rectangular prism.
Length = 20 cm
Width = 8 cm
Height = 16 cm
c) What is the area of each of the faces?
The left and right faces are identical and their area is given by
Right face = 8×16 = 128 cm²
Left face = 8×16 = 128 cm²
The front and back faces are identical and their area is given by
Front face = 20×16 = 320 cm²
Back face = 20×16 = 320 cm²
The top and bottom faces are identical and their area is given by
Top = 20×8 = 160 cm²
Bottom = 20×8 = 160 cm²
d) Add up the areas of all of the faces.
Let us add the areas of all the faces obtained in part (c)
Total area = Right+Left+Front+Back+Top+Bottom
Total area = 128+128+320+320+160+160
Total area = 1216 cm²
