The lateral surface area of a cube with side length 9 cm is 324 cm². It's calculated by multiplying the perimeter of one side (4 × 9 cm) by the side length (9 cm). ;
a = 9 c m s u r f a ce a re a : A S = 6 a 2 → A S = 6 ⋅ 9 2 = 6 ⋅ 81 = 486 ( c m 2 )
The lateral surface area of a cube with a side length of 9 cm is 324 cm 2 calculated by finding the area of one face and multiplying it by four, as there are four lateral faces. Each face has an area of 81 cm 2 .
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