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Byju's Answer
Standard VII
Mathematics
Perimeter of Rectangles and Squares
The perimeter...
Question
The perimeter of a square is 48 m. The area of a rectangle is 4 sq .less than the area of the given square. If the length of the rectangle is 14 m, find its breadth.
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Solution
Let
the
breadth
of
the
rectangle
=
x
m
Now
,
length
of
the
rectangle
=
14
m
Area
of
rectangle
=
length
×
breadth
=
14
x
m
2
Let
the
length
of
each
side
of
square
=
s
m
perimeter
of
square
=
48
m
⇒
4
s
=
48
⇒
s
=
12
Area
of
square
=
s
2
=
12
2
=
144
m
2
Now
,
area
of
square
-
area
of
rectangle
=
4
m
2
⇒
144
-
14
x
=
4
⇒
-
14
x
=
-
140
⇒
x
=
10
So
,
breadth
of
the
rectangle
=
10
m
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