Question

The length of the diagonal of a cube is 7 root 3cm.Find its total surface area.

Answer 1

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Answer 2

Given - Length of diagonal of the cube

Find - Total Surface area

Solution - The total surface area of the cube is 294 centimetres.

Length of diagonal of cube = ✓3*side of the cube.

Side of cube = 7✓3/✓3

Side of cube = 7 centimetres

The total surface area of cube = 6*side²

The total surface area of the cube = 6*7²

The total surface area of the cube = 294 centimetres

Thus, the total surface area of the cube is 294 centimetres.