3. If the length of a diagonal of a cube is 8/3 cm, then its surface area is :
(a) 512 cm2
(b) 384 cm2 (c) 192 cm2 (d) 768 cm2
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Answered by
1
Answer:
128 cm²
Step-by-step explanation:
Given,
Diagonal of cube=8/3 cm
√3×a=8/3
a=8/3√3
Now, we found side as 8/3√3,
Total Surface Area of cube=6 s²
T.S.A=6 (8/3√3)(8/3√3)
T.S.A=128 cm²
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Answer:
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