Question

find the edge of the cube whose surface area is 2166 cm²​
​

Answer 1

Answer:

Let the side of a cube be a cm

As we know that

total surface area of a cube with side a is 6a

2

Given total surface area of a cube is 216 cm

2

⟹6a

2

=216

⟹a

2

=36

⟹a=6

So side of a cube is 6 cm

Answer 2

Answer:

a = 19 cm

Am I correct ?

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