Question

28. T
16. If the length of diagonal of a cube is 8√3 cm then its surface area is
(a) 192 cm?
(b) 384 cm?
(d) 768 cm?
(c) 512 cm?​

Answer 1

diagonal=√3^a

8√3 =√3a

a=8cm.

now,

surface area of cube=6a²

=6x (8)²

=384cm²

Hope it helps...

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Answer 2

Answer

Step-by-step explanation:

area of cube=6a^2

diagonal=√3a

therefore a=8

area =384cm