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Byju's Answer
Standard VII
Mathematics
Area of Square & Rectangle
The breadth o...
Question
The breadth of a rectangular garden is
2
3
of its length. If its perimeter is 40 m, find its length?
A
16 m
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B
12 m
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C
6 m
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D
10 m
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Solution
The correct option is
B
12 m
Let the length of the garden be ‘x’ m
Breadth =
2
3
x
Perimeter = 2 [Length + Breadth]
2
(
x
+
2
3
) = 40
⇒
2
x
+
4
3
x
=
40
(Solving the bracket)
⇒
6
x
+
4
x
=
120
⇒
10
x
=
120
∴
x
=
120
10
∴
Length = 12 m and breath
2
3
x
=
12
×
2
3
=
8
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