.Find the length of the side of a cube whose total surface area is 216 cm ²​

Answer :

• 6cm is the length of the side of a cube

Given :

• Total surface area is 216 cm²

To find :

• The length of the side of a cube

Solution :

Given,

• Surface area is 216 cm²

As we know that,

• Surface area of cube = 6 × a²

⟾ Surface area of cube = 6 × a²

⟾ 6 × a² = 216

⟾ a² = 216/6

⟾ a² = 36

⟾ a = √36

⟾ a = 6cm

Hence , 6cm is the length of the side of a cube

More Explanation :

• Cube has 6 faces
• Cube has 12 edges
• Cube has 8 vertices
• Lateral surface area of cube = 4a²
• Total surface area of cube = 6a²
• Volume of cube = a³
• Cube is a solid and 3D shape

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