Four-sided 5957

How much m2 of the galvanized sheet is used to cover the roof of the tower, which has the shape of a four-sided pyramid, whose base edge is 6 m long? The height of the tower is 9m. When covering, is 5% metal waste expected?

Correct answer:

S =  119.5341 m2

Step-by-step explanation:

a=6 m h=9 m h2=h2+(a/2)2=92+(6/2)2=3 10 m9.4868 m S1=h2 a/2=9.4868 6/2=9 10 m228.4605 m2 S2=4 S1=4 28.4605=36 10 m2113.842 m2 S=(1+5/100) S2=(1+5/100) 113.842=119.5341 m2

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