Applied math- scale

Question

A pet store designs fish tanks that are in the shape of a rectangular prism. The small tank has a capacity of 1920 cu in. The scale factor that relates the dimensions of the small tank to the dimensions of the medium tank are 1.25. The scale factor that relates the dimensions of the medium tank to the dimensions of the large tank are 1.2.

Glass costs the store $12 to put in the small tank.

Find the capacity of the medium and large tanks and find the cost of the glass for the medium and large tanks.

1. 1 mark for finding the surface area scale factor for the medium tank
2. 1 mark for finding the surface area scale factor for the large tank
3. 1 mark for finding the cost of glass for the medium & large tank
4. 1 mark for finding the volume scale factor for the medium tank
5. 1 mark for finding the volume scale factor for the large tank
6. 1 mark for finding the volume of the medium & large tank

Answer 1

small=xyz=1920cu/in

med=(x*1.25)(y*1.25)(z*1.25)=1920*1.25=2400cu/in

lg=4800cu/in

Need more imfo to get areas.