Answer:
8.25 feet approx
Step-by-step explanation:
Given data
Diameter= 18inches to feet= 1.5 feet
radius= 1.5/2= 0.75 feet
Height= 3 feet
The expression for the total surface area of the barrel(cylinder) is given as
TSA= 2πrh+2πr^2
substitute
TSA= 2*3.142*0.75+ 2*3.142*(0.75)^2
TSA= 4.713+ 6.284*0.5625
TSA= 4.713+ 3.53475
TSA= 8.25 feet
Hence the TSA is 8.25 feet approx
