Question

11. Sides of a cube are doubled. In what ratio will the surface area increase ?
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Answer 1

Answer:

1:4

Step-by-step explanation:

Let the side orignally be x

TSA of cube = 6a^2

So, TSA =6x^2

If the sides are doubled, side = 2x

Therefore, TSA = 6(2x)^2

= 6(4x^2)

=24x^2

now, ratio = 6x^2

24x^2

= 1 / 4

=1:4