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Byju's Answer
Standard VII
Mathematics
Dividing a Monomial by a Monomial
Find the leng...
Question
Find the length and breath of the rectangle given below if its perimeter is
72
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Solution
perimeter
=
2
(
l
+
b
)
=
2
(
5
x
+
4
+
x
−
4
)
=
72
12
x
=
72
x
=
6
l
=
5
x
+
4
b
=
x
−
4
l
=
34
b
=
2
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