Question

How does the surface area of a cube is changed, if its edge its(i) alved (ii) doubled?​

Answer 1

Answer :

☑ The change in surface area when its edge is halfed ,

Let the edge be s

$= 6( \frac{1}{2} s) {}^{2} \\ = 6( \frac{1}{4} s {}^{2} ) \\ = \frac{3s { }^{2} }{2}$

☑ When its edge is doubled

$= 6(2s) {}^{2} \\ = 6(4s {}^{2} ) \\ = 24s {}^{2}$