Connections 6133

Gutters have the shape of half a cylinder. Their diameter is 16 cm, and the total length around the roof is 32.6 m. How many m2 of sheet metal are needed to make them? Add 15% for connections and cleaning.

Correct answer:

A =  9.4223 m2

Step-by-step explanation:

D=16/100=254=0.16 m r=D/2=0.16/2=252=0.08 m l=32.6 m  S1=π D l=3.1416 0.16 32.616.3865 m2 q=1+15/100=2023=1.15  A=S1/2 q=16.3865/2 1.15=9.4223 m2



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