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Standard VII
Mathematics
Perimeter of a Rectangle
To fence a ci...
Question
To fence a circular garden, the total cost is
R
s
.
26
,
400
at the cost of
R
s
.
50
per metre. Find the radius of the circle.
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Solution
We have,
Total cost of fencing
=
26.400
Cost of fencing
=
50
per meter,
Total length of fence
=
26.400
50
=
528
meter.
Thus, perimeter of circular garden
=
528
∴
if the radius is
(
R
)
2
π
R
=
528
R
=
528
π
R
=
528
2
×
7
22
R
=
84
Hence, this is the answer,
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