Flowerbed

The flowerbed has a length of 3500mm and a width of 1400mm. How much foil is needed to cover the flowerbed? How many m2 of foil was consumed for its production (add 10% of the material to the joint and waste)? How many liters of air is inside the enclosure? (Flowerbed height is 1 dm)

Correct answer:

S1 =  4.9 m2
S2 =  6.468 m2
V =  490 l

Step-by-step explanation:

a=3500/1000=27=3.5 m2 b=1400/1000=57=1.4 m2 c=100/1000=101=0.1 m2 S1=a b=3.5 1.4=4.9 m2
S=S1+c (2 a+2 b)=4.9+0.1 (2 3.5+2 1.4)=25147=5.88 S2=(1+10/100) S=(1+10/100) 5.88=6.468 m2
V=1000 S1 c=1000 4.9 0.1=490 l



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