Quadrilateral 33143

The roof of the prefabricated holiday cottage has the shape of a regular quadrilateral pyramid with a length of the base edge of 8 meters and a height of 9 m. How many square meters of cardboard are needed to cover the roof?

Correct answer:

S =  157.5817 m2

Step-by-step explanation:

a=8 m h=9 m  h2=h2+(a/2)2=92+(8/2)2=97 m9.8489 m  S1=a h2/2=8 9.8489/2=4 97 m239.3954 m2  S=4 S1=4 39.3954=16 97=157.5817 m2

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