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Byju's Answer
Standard VI
Mathematics
Area of Square
Adjacent side...
Question
Adjacent sides of a rectangle are of lengths
7
c
m
and
24
c
m
. Find the length of its diagonals
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Solution
Given :
Adjacent side are 7 cm and 24 cm for rectangle
∴
Let's say we have rectangle
A
B
C
D
Opposite sides of rectangle are equal in length
∴
A
D
=
B
C
=
7
c
m
A
B
=
C
D
=
24
c
m
Now
∠
A
=
90
∘
In
Δ
A
B
D
B
D
2
=
A
D
2
+
A
B
2
[By Pythagoras theorem]
B
D
2
=
(
7
)
2
+
(
24
)
2
B
D
2
=
49
+
576
B
D
2
=
625
B
D
=
25
c
m
Length of diagonals is same in rectangle
∴
B
D
=
A
C
=
25
c
m
∴
length of diagonals is
25
c
m
.
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Q.
Adjacent sides of a rectangle are 7 cm and 24 cm. Find the length of its diagonal.