Question

find the total surface area of cube in whose each side of is 8dm​

Answer 1

Given :

• Side of a cube = 8 dm

To find :

• Total surface area of cube

According to the question,

As we know,

➞ Total surface area of cube = 6a²

➞ Total surface area of cube = 6 × 8 dm × 8 dm

➞ Total surface area of cube = 384 dm²

So,the total surface area of cube is 384 dm².

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More Formulas :-

• Surface area of cuboid = 2(lb × bh × hl)

• Surface area of cube = 6a²

• Curved surface area of a cylinder = 2πrh

• Total surface area of cylinder = 2πr(r + h)

• Surface area of a sphere of radius,r = 4πr²

• Volume of cuboid = l × b × h

• Volume of cube = a³

Answer 2

Answer:

Given :-

• Side of a cube is 8 dm.

To Find :-

• What is the total surface area of a cube.

Formula Used :-

$\boxed{\bold{\small{Total\: surface\: area\: =\: 6{(side)}^{2}}}}$

Solution :-

Given :

• Side = 8 dm

According to the question by using the formula we get,

⇒ T.S.A = 6(8 dm)²

⇒ T.S.A = 6(64 dm)

➠ T.S.A = 384 dm²

$\therefore$ The total surface area of a cube is 384 dm².

✪ Extra Information ✪

➣ Cube :-

• A cube is a three dimensional shape which is defined XYZ plane.
• It's has six faces, eight vertices and twelve edges.

➣ Extra Formula :

• Lateral surface area = 4(side)²
• Volume of cube = (side)³
• Diagonal of a cube = √3
• Perimeter of a cube = 12 × side