Determine the area of the rectangular land (in ha), which has dimensions of 3 cm and 4.5 cm on the plan with a scale of 1: 40,000.

Correct result:

S =  216 ha


M=40000 a=3 cm m=3/100  m=0.03 m b=4.5 cm m=4.5/100  m=0.045 m  x=M a=40000 0.03=1200 m y=M b=40000 0.045=1800 m  S1=x y=1200 1800=2160000 m2 S=S1 ha=S1/10000  ha=2160000/10000  ha=216 ha

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