Question

The total surface area of a cube is 54 square cm.
What is the length of its sides?

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Answer 1

Answer:

total surface area = 54 cm

TSA = 6a2

6a2 = 54

a2 = 54 ÷ 6

a2 = 9

a = 3

hence , length of side is 3cm

Answer 2

Answer:

if side of cube is X .

then surface area of cube is 6X^2

so 6X^2= 54

X^=9

then X=3

side of cube is 3 cm