Answer:
16
Step-by-step explanation:
The circumferince of the circle is 2πR ;
The area of the circle is π

;
Then, 2πR = 704 ;
R = 352 / π ;
π

= π × ( 352 / π )^2 = ( 352^2) / π = 123904 / π ≈ 39459.87 ≈ 39460 cm^2 ;
Answer: 44 gallons
Step-by-step explanation:
Using proportion,
33 gallons = 3hours
X = 4hours
Cross multiply
3 × X = 33 × 4
3X = 132
Divide bothside by 3
3x/3 =132/3
X = 44
Therefore the helicopter uses 44gallons for 4 hours.
Might want to edit this question and add pictures:-)