Question

(b) find the ratio of new surface area to the original surface area.​

Answer 1

Answer:

1:4

Step-by-step explanation:

Let the length of the edge of the cube be 'x' cm

 (i) Total surface area = 6x² cm²

Increased length of the edge = 2x 

Total surface area = 6(2x)² cm² = 24x² cm²

If the edge of the cube is doubled surface area of the cube increases by 4 times. 

Ratio = 1:4