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UPSC 2015 CDS II Math Paper
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© examsnet.com
Question : 56
Total: 100
There are 437 fruit plants in an orchard planted in rows. The distance between any two adjacent rows is 2 m and the distance between any two adjacent plants is 2 m. Each row has the same number of plants.- There is 1 m clearance on all sides of the orchard. What is the cost of fencing the area at the rate of Rs. 100 per metre ?
[2015 CDS-II]
Rs. 15,600
Rs. 16,800
Rs. 18,200
More information is required
None of Above
Validate
Solution:
Number of fruit plants in the orchard
=
437
=
23
×
19
Length of the orchard,
l
=
22
×
2
+
1
+
1
=
46
m
Breadth of the orchard,
b
=
18
×
2
+
1
+
1
=
38
m
Perimeter of the orchard
=
2
(
l
+
b
)
=
2
×
(
46
+
38
)
=
168
m
Therefore, cost of fencing the orchard at
₹
100
/
m
=
168
×
100
=
₹
16
,
800
© examsnet.com
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