Question

I need to show work, please help me!

Answer 1

Explanation:

a.

Freshwave- v=lwh v= 8*5*3.5 v= 140cm^3

Happy Fin- v=3.14 * 3.5* 4 v=43.96cm^3

r=d/2 r=7/2 r=3.5

b. freshwave- 90= 140/x x=140/90 x= $1.56per cm^3

Happy fin- 43.96/1.56= $28.18