Question

find the tsa of a cube whose side is 6.4 cm​

Answer 1

Answer :

• Total surface area of cube is 245.76 cm²

Given :

• Side = 6.4cm

To find :

• Total surface area of cube

Solution :

Given

• Side = 6.4 cm

As we know that,

• Total surface area of cube = 6a²

where , a is side

》 Total surface area of cube = 6a²

》6(6.4)²

》6(6.4 × 6.4)

》6(40.96)

》 245.76 cm²

Hence, Total surface area of cube is 245.76 cm²

More Explanation :

• Lateral surface area of cube = 4a²
• Total surface area of cube = 6a²
• Volume of cube = a³

Answer 2

Given:-

• Side of a cube is 6.4 cm.

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To find:-

• Total surface area of a cube.

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Solution:-

★ In this question we have given the side of a cube. We have to find out the Total surface area of a cube. Let's do it.

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According to the question,

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⇢ T.S.A = 6a²

⇢ T.S.A = 6(6.4)²

⇢ T.S.A = 6(6.4 × 6.4)

⇢ T.S.A = 6(40.96)

⇢ T.S.A = 245.76 cm²

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Hence,

• The Total surface area of cube is 245.76 cm².