I think it is -28?????????
Step-by-step explanation:
small circle
C= pi D
C = 3.1415(9)
C= 28.3 ft
large circle
C= 2(3.1415)(7)
C = 44 ft
Add 28.3 + 44 = 72.3 ft
3.78/6= 0.63
$0.63 per bottle
42(0.63)= $26.46
Answer:
2 gallons must be added Hope this helps!
