The observatory

The dome of the hemisphere-shaped observatory is 5.4 meters high. How many square meters of sheet metal needs to be covered to cover it, and 15 percent must be added to the minimum amount due to joints and waste?

Correct answer:

S =  210.7003 m2

Step-by-step explanation:

r=5.4 m  S1=4π r2=4 3.1416 5.42366.4354 m2  k=1+15/100=2320=1.15  S=S1/2 k=366.4354/2 1.15=210.7003 m2



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