The tent

Calculate how much cover (without a floor) is used to make a tent that has the shape of a regular square pyramid. The edge of the base is 3 m long and the height of the tent is 2 m.

Correct answer:

S =  15 m2

Step-by-step explanation:

a=3 m h=2 m  h2=h2+(a/2)2=22+(3/2)2=25=2.5 m  S1=a h2/2=a 25/2=3 2.5/2=415=3.75 m2  S=4 S1=4 415=44 15=460=15 m2

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