<h3><u>Given </u><u>:</u><u>-</u></h3>
- <u>The </u><u>diameter </u><u>of </u><u>a </u><u>circular </u><u>pond </u><u>is </u><u>7</u><u>0</u><u> </u><u>m</u>
- <u>The </u><u>cost </u><u>of </u><u>fencing </u><u>is </u><u>Rs</u><u> </u><u>.</u><u> </u><u>1</u><u>2</u><u> </u><u>per </u><u>metre </u>
<h3><u>To </u><u>Find </u><u> </u><u>:</u><u>-</u></h3>
- <u>We </u><u>have </u><u>to </u><u>find </u><u>the </u><u>area </u><u>of </u><u>circular </u><u>pond </u><u>and </u><u>the </u><u>cost </u><u>of </u><u>fencing </u><u>around </u><u>it </u><u>with </u><u>4</u><u> </u><u>round </u><u>at </u><u>Rs</u><u> </u><u>.</u><u> </u><u>1</u><u>2</u><u> </u><u>per </u><u>metre </u>
<h3><u>Let's</u><u> </u><u>Begin</u><u> </u><u>:</u><u>-</u><u> </u></h3>
<u>We </u><u>have</u><u>, </u>
- Diameter of the pond = 70 m
<u>Therefore</u><u>, </u>
Radius of the pond
Thus, The radius of the pond is 35 m
<h3>
<u>Now</u><u>, </u></h3>
<u>We </u><u>know </u><u>that</u><u>, </u>
Circumference of circle = 2πr
<u>Therefore</u><u> </u><u>,</u>
Circumference of the circular pond
Thus, The area of the circular pond is 220 m
<h3>
<u>Now</u><u>, </u></h3>
We have to find the cost of fencing around it with 4 round
<h3><u>Therefore</u><u>, </u></h3>
- The cost of fencing per metre = Rs12
The cost of fencing of 1 round of circular pond
The cost of fencing of 4 rounds of circular pond
Hence, The total cost of fencing of circular pond with 4 rounds of it ,is Rs.10560