Volume and surface area math 100 points

Part 1) we have that
volume smaller solid=512 cm³
volume larger solid=2197 cm³

we know that
volume larger solid=[scale factor]³*volume smaller solid
scale factor=∛[volume larger solid/volume smaller solid]
scale factor=∛[2197/512]> scale factor=1.625

Part 2) 
the ratio of the surface areas is equal to [scale factor]²
1.625²> 2.64

Part 3)
surface area smaller solid=960 cm²
then
surface area larger solid=scale factor²*surface area smaller solid
surface area larger solid=[1.625]²*960> 2535 cm²
 surface area larger solid is  2535 cm²

D