The length of the longest diagonal of a cube is 7√3cm. Find its volume (in cm3).
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 343.
Diagonal of cube = a√3 cm
Volume of cube = a3
According to the given question,
a√3 = 7√3
⇒ a = 7
Now, volume = 73
⇒ 343 cm3