Rectangular garden has a length 99 m and width 84 m. Calculate how many m2 will decrease its area if land by ornamental fence with width 30 cm.

Correct answer:

S =  109.44 m2

Step-by-step explanation:

a=99 m b=84 m h=30 cm m=30/100  m=0.3 m  S1=a b=99 84=8316 m2 S2=(a2 h) (b2 h)=(992 0.3) (842 0.3)=8206.56 m2  S=S1S2=83168206.56=273625=273625 m2=109.44 m2

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