Argicultural field

Field has a rectangular shape with a width 180 m and circumference 940 m. How many hectares acreage has field?

Correct result:

x =  5.22 ha

Solution:

a=180 o=940 b=o/2−a=940/2−180=290 S=a⋅ b=180⋅ 290=52200 x=S/1002=52200/1002=26150=26150 ha=5.22 ha

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