Question

UTUU ureU IS 25 cm. 4. The dimensions of a cube area doubled. By how many times will its volume and surface area increase?​

Answer 1

Answer:

Volume of cube = $l^{3}$

Volume of cube is proportional to cube of length. So, if the dimensions of a cube are doubled, its volume will increase 8 times.

Surface area = 6$a^{2}$

Surface area is proportional to the square of the length. So, if dimensions are doubled, its surface area will increase by 4 times.