If the diagonal of a cube is of length ‘l’, then the total surface area of the cube is?
Answer & explanation
Correct answer: option 3
Diagonal = \(\sqrt {3}\)a
l = \(\sqrt {3}\) a
a = \(\frac{l}{\sqrt {3}}\)
T.S.A. = 6a2 = 6\(\frac{l^2}{3}\) = 2 l²
If the diagonal of a cube is of length ‘l’, then the total surface area of the cube is?
Correct answer: option 3
Diagonal = \(\sqrt {3}\)a
l = \(\sqrt {3}\) a
a = \(\frac{l}{\sqrt {3}}\)
T.S.A. = 6a2 = 6\(\frac{l^2}{3}\) = 2 l²