Answered

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A rain barrel has a diameter of 18 inches and a height of 3 feet. Find the total surface area to the nearest hundredth

Sagot :

samuelonum1

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

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