Answer:
Step-by-step explanation:
Surface area of a cube = 6a²
When each dimension is doubled, Side =2a
Surface area = 6*(2a)² = 6 * 4*a² = 4*(6a²)
So, when each dimension is doubled, surface area is 4 times of the original surface.
a = 3a
Surface area = 6*(3a)² = 6 * 9 *a² = 9 *6a²
= 9 times the original area
a = 4a
Surface area = 6*(4a)² = 6* 16 * a²
= 16 * (6a²)
= 16 times of original area
