The mass of an ornament is m grams.
The height of the ornament is h centimetres.
m is directly proportional to the cube of h.
m = 525 when h= 5
a) Work out an equation connecting m and h.

Respuesta :

Given:

m is directly proportional to the cube of h.

m = 525 when h= 5.

To find:

The equation connecting m and h.

Solution:

m is directly proportional to the cube of h.

[tex]m\propto h[/tex]

[tex]m=kh[/tex]            ...(i)

Where, k is the constant of proportionality.

Putting m = 525 and h= 5, we get

[tex]525=k(5)[/tex]

[tex]\dfrac{525}{5}=k[/tex]

[tex]105=k[/tex]

Putting k=105 in (i), we get

[tex]m=105h[/tex]

Therefore, the required equation is [tex]m=105h[/tex].