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What will be the cost of Fencing; a circular field whose area is 1386 sq.m.The cost of fencing is Rs. 5 per meters.
- ARs. 660
- BRs. 639
- CRs. 699
- DRs. 654
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Discussion 1
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Solution
Let radius of circle be 'r' meters.
${\pi}\times{r^{2}}=1386$.
$r=21$m.
Circumference of circle = $2\times{\pi}\times{r}$.
=132 meters.
Cost of fencing = $132\times5$.
=Rs. 660.
Hence, Option A is correct.
Let radius of circle be 'r' meters.
${\pi}\times{r^{2}}=1386$.
$r=21$m.
Circumference of circle = $2\times{\pi}\times{r}$.
=132 meters.
Cost of fencing = $132\times5$.
=Rs. 660.
Hence, Option A is correct.