Q. 6

# If the length of

Let the edge of a cube be a cm.

We know that the body diagonal of a cube = 3a cm

According to question,

3 a = 43

a = = 4 cm

As, total surface area of a cube = 6a2 sq.cm

= 6×(4)2

= 6×16

= 96 sq. cm

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