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Byju's Answer
Standard VIII
Mathematics
Area of Rhombus
The lengths o...
Question
The lengths of the diagonals PR and QS of a rhombus are
20
c
m
and
48
c
m
respectively, find the length of each side of the rhombus.
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Solution
Here,
P
Q
R
S
is a rhombus.
P
R
=
20
,
c
m
and
Q
S
=
48
c
m
We know the diagonals of a rhombus bisect each other perpendicularly.
∴
P
R
⊥
Q
S
P
O
=
1
2
×
P
R
=
1
2
×
20
c
m
=
10
c
m
O
S
=
1
2
×
Q
S
=
1
2
×
48
c
m
=
24
c
m
△
P
O
S
is a right-angled triangle.
∴
(
P
S
)
2
=
(
P
O
)
2
+
(
O
S
)
2
[ By Pythagoras theorem ]
⇒
(
P
S
)
2
=
(
10
)
2
+
(
24
)
2
⇒
(
P
S
)
2
=
100
+
576
⇒
(
P
S
)
2
=
676
⇒
P
S
=
26
c
m
All sides of a rhombus are equal.
∴
P
Q
=
Q
R
=
R
S
=
S
P
=
26
c
m
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Q.
The lengths of the diagonals PR and QS of a rhombus are 20cm and 48 cm. respectively, find the length of each side of the rhombus.