Question 1029042
Hi there,
Ordinary sized has a height
of 15 cm and a volume of 280 cm^3
Family sized has volume of 750 cm^3
We have the two volumes which
we use as a ratio.
As we are trying to find the 
larger bottle's height we use
the ratio 750/280
We then cube root the ratio.
3√750/280
= 1.388783
Then we multiply the small
bottles height by 1.388783
15 cm x 1.388783
= 20.8 cm
Hope this helps:-)