Flowerbed

Flowerbed has the shape of a truncated pyramid, the bottom edge of the base a = 10 m, the upper base b = 9 m. Deviation angle between edge and the base is alpha = 45°. What volume is needed to make this flowerbed? How many plants can be planted if 1 m2 = 100 plants?

Correct answer:

V =  63.87 m3
n =  8100

Step-by-step explanation:

V=V1V2 tan45=h1102/2 tan45=h292/2 h1=102/2tan45=7.071 m h2=92/2tan45=6.364 m V1=13102h1=235.7 m3 V2=1392h2=171.828 m3  V=V1V2=63.87 m3
n=9 9 100=8100



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