Transporting 17193

A barrel for transporting fuel has a height of 90 cm and a radius of the base of 30 cm. How many square meters of sheet metal are needed to make a barrel?

Correct answer:

S =  2.2619 m2

Step-by-step explanation:

h=90 cm m=90:100  m=0.9 m r=30 cm m=30:100  m=0.3 m  S1=π r2=3.1416 0.320.2827 m2  S=2π r h+2 S1=2 3.1416 0.3 0.9+2 0.2827=2.2619 m2

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