Question

if the edge of a cube is tripled find the ratio of surface area and that of volume of the two cubes​

Answer 1

Answer:

let the edge of the cube 1 be x

so surface area cube 1 = 6*x*x

and volume will be x*x*x

given the edge of the new cube is 3x

so the surface area of the new cube is 6*3x*3x

volume =3x*3x*3x

ratio of surface area = (6*x*x)/(6*3x*3x) = 1/9 , so ratio = 1:9

ratio of volume = (x*x*x)/(3x*3x*3x) = 1/27 , so ratio = 1:27