Observatory's 81915

In our city, they decided to reconstruct the observatory's dome and cover it with sheet metal. At least how many square meters of sheet metal will they need if the dome is in the shape of a hemisphere with a diameter of 6m

Correct answer:

S =  56.55 m2

Step-by-step explanation:

D=6 m r=D/2=6/2=3 m  S1=4π r2=4 3.1416 32113.0973 m2  S=S1/2=113.0973/2=56.55 m2



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