Quadrilateral 22003

The shelter has the shape of a regular quadrilateral pyramid without a front wall. The length of the base edge is 3 meters, and the shelter's height is 3.5 meters. How much canvas must be bought to sew it if we have to increase consumption by 20% for folds and cuts?

Correct answer:

S =  20.5626 m2

Step-by-step explanation:

n=41=3 a=3 m h=3.5 m  h2=h2+(a/2)2=3.52+(3/2)23.8079 m  S1=2h2 a=23.8079 35.7118 m2  q=100%+20%=1+10020=1.2  S=n q S1=3 1.2 5.7118=20.5626 m2

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