Question

what will be the percentage decrease in the surface area of a cube, when each side decreased to half times of the original length?

Answer 1

Step-by-step explanation:

sa= 6a²

when halved = 6(a/2)² = 6(a²/4)

= 3(a²/2)

ratio:

6a². : 3(a²/2)

6a² : 3a²/2

12a². :. 3a²

12. : 3

4. : 1

1. : 1/4

percentage 25%