6. If the length of diagonal of a cube is 8V3 cm, then
find its surface area.
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Answer:
let side be a
length = hypotenuse (h)
h² = b² + p²
(8V3)² = a² + a²
192 = 2a²
a² = 96 cm
a = 4V6 cm
surface area of cube = 6a²
= 6(4V6)²
= 6(96)
= 576 cm²
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