Question

if the ratio of two cubes is 1:8then find the ratio of total surface of area.​

Answer 1

Answer:

Let V1 and V2 be two volume of cubes.

l1 and l2 be edges of the two cubes.

We know that,

Volume of cube V=l3

So,

⇒  V2V1=l23l13

⇒  18=(l2l1)3             [ Given ]

∴  l2l1=12

∴  Ratio of their edges is 2:1.