Mathematics
The total surface area of a cube is 96 cm2. The length of a diagonal of the cube is :
16 cm
cm
cm
cm
Mensuration
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Answer
Given,
Total surface area of cube = 96 cm2.
By formula,
Total surface of a cube = 6a2
⇒ 96 = 6a2
⇒ a2 =
⇒ a2 = 16
⇒ a =
⇒ a = 4 cm.
Calculating the length of diagonal of a cube,
Diagonal of a cube = cm.
Hence, option 4 is the correct option.
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