Maths-
General
Easy

Question

Dimensions of a rectangular box are 20mx5mx6m,find the difference between T.S.A and L.S.A

  1. 300
  2. 200
  3. 400
  4. 100

Hint:

 Total Surface Area of Cube: The total surface area of a cube refers to the total area covered by all six faces of a cube. To calculate the surface of a cube, we find the sum of the areas of these 6 faces.
Surface Area = 6a2
= 6 (area of face)
where a is the side of cube

The correct answer is: 200


    • Step 1:We have given area of one face of the cube.

    Area of face = 81

    • Step 2: For total surface area, find out the product of the square of side length by 6.
    Surface area =  6 (area of face)

                          =  6 (81)

                          =   486

    • Step 4: Therefore, the surface of the given cube is 486.
    • Therefore, the correct answer is option A) 486 .

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