7. The length of a rectangle is 2 more than 3 times its breadth. If both length and breadth are increased by
3 units, the new perimeter becomes 2 times the original. Find the length and breadth of the rectangle.
Answers
Answered by
1
Answer:Length is
21
and width is
7
Explanation:
Ill use
l
for length and
w
for width
First it is given that
l
=
3
w
New length and breadth is
l
+
2
and
w
+
1
respectively
Also new perimeter is
62
So,
l
+
2
+
l
+
2
+
w
+
1
+
w
+
1
=
62
or,
2
l
+
2
w
=
56
l
+
w
=
28
Now we have two relations between
l
and
w
Substitute first value of
l
in the second equation
We get,
3
w
+
w
=
28
4
w
=
28
w
=
7
Putting this value of
w
in one of the equations,
l
=
3
⋅
7
l
=
21
So length
Explanation:
Answered by
0
Answer:
length 5
breadth 1
......
Similar questions