Question 798221
Total surface area of 1 tank

2pir^2+pir^2h

2*22/7 *2^2+22/7*2^2*6

176/7 + 528/7

100.57 sq.ft

100.57*45 = 4526 sq.ft


350 sq.ft ------------1 gal
4526 sq.ft ----------12.93 gallons

13 gallons required

two cans of 5 gallons and 3 cans of 1 gallon