The length of the diagonal of each face of a cube is 6√2 cm. Find the total surface area of the cube.
WBBSE
Class X
Mathematics
Rectangular Parallelopiped or Cuboid
02 Mark
2024
Face diagonal = 6√2
⇒ a√2 = 6√2
⇒ a = 6 cm.
Total surface area = 6a²
= 6 × 6²
= 6 × 36
= 216 cm²
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