Question

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

Answer 1

Answer:

ratio of volumes, a^3 / 27a^3 = 1/27 = 1:27

Step-by-step explanation:

let the side of the cube be, a

the total surface area of cube = 6a^2

the volume of cube = a^3

After the sides are tripled ;

TSA = 6*(3a)^2 = 54a^2

volume = (3a)^3 = 27a^3

ratio of TSA, 6a^2 / 54a^2 = 1/9 = 1:9