the length ( L cm) of an edge of a cube is proportional to the cube root of its mass ( M grams).It is known that if L= 15, then M=125. let K be the constant of variation.

Question

CALCULATE THE VALUE OF K

Answer 1

L = K∛M

15 = K∛125
15 = K*5
3 = K

Answer 2

L = k m^(1/3)

15 = k (125)^(1/3) = k (5)

k = 3

Answer 3

The length (lcm)of an edge of cube is directly proportional to the cube root of it's mass (ingrams)it's known if l=15 then m=125
Write down the relation ship between l,m,k