Find the area of the side surface of a rectangular parallelepiped. Given: height = 6 cm, length = 4 cm, width = 2 cm.

a = 6 cm.
b = 4 cm.
c = 2 cm.
S -?
The area of the lateral surface of the rectangular parallelepiped S will add up to 3 pairs of the areas of the rectangles.
S = 2 * S1 + 2 * S2 + 2 * S3.
S1 = a * b.
S2 = a * c.
S3 = b * c.
S = 2 * a * b + 2 * a * c + 2 * b * c.
S = 2 * 6 cm * 4 cm + 2 * 6 cm * 2 cm + 2 * 4 cm * 2 cm = 48 cm ^ 2 + 24 cm ^ 2 + 16 cm ^ 2 = 88 cm ^ 2.
Answer: S = 88 cm ^ 2.