Question

find the total surface of cube whose length is 7 cm​

Answer 1

Answer:

formula of total surface area of a cube is $6L^{2}$

6*7*7 = 49*6 = 294$cm^{2}$

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Answer 2

Answer :

• Total Surface Area of Cube = 294 cm²

Given :

• Length of the cube is 7 cm

To Find :

• Total Surface Area

Formula Used :

• Total Surface Area of Cube = 6a²

where ,

• a denotes side of the cube

Solution :

Given that ,

Side of Cube , a = 7 cm

So ,

Total Surface Area of the Cube , TSA = 6a²

⇒ TSA = 6 * ( 7² )

⇒ TSA = 6 * 49

⇒ TSA = 294 cm²

More Info :

• Area of square = a²
• Area of rectangle = length * breadth
• Volume of cube = a³
• Volume of cuboid = length * breadth * height