the area of a circular field is 13.86 hectares find teh cost of fencing it at the rate of 4.25 per meter
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the area of a circular field is 13.86 hectares find teh cost of fencing it at the rate of 4.25 per meter
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As per the data given in the question,
In the above question, it is given that,
The area of a circular field is 13.86 hectares
cost of fencing 4.25 per meter.
We have to find the cost of fencing.
Area of the circle is [tex]=2\pi r[/tex]
[tex]\begin{array}{l}\text { Area }=(13.86 \times 10000) \mathrm{m}^{2}=138600 \mathrm{~m}^{2} . \\\pi \mathrm{R}^{2}=138600 \\(\mathrm{R})^{2}=(138600 \times(7 / 22)) \\\mathrm{R}=210 \mathrm{~m} .\end{array}[/tex]
Therefore the circumference will be [tex]=2\pi r[/tex]
[tex]2 \pi R=(2 \times(22 / 7) \times 210) m\\=1320 m .[/tex]
Thus the cost of fencing will be circumference into rate of fencing per meter,
[tex]\text { Cost of fencing }=\text { Rs. }(1320 \times 4.25)=\text { Rs. } 5610[/tex]