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Byju's Answer
Standard VII
Mathematics
Classification of Triangles Based on Angles
The side of a...
Question
The side of a right triangle containing right angle are
5
c
m
and
(
3
x
−
1
)
c
m
.If area of tiangle is
60
c
m
2
, find sides of triangle.
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Solution
Area of traingle
=
1
2
×
(Product of sides containing right angle)
⇒
60
=
1
2
×
5
×
(
3
x
−
1
)
⇒
24
=
3
x
−
1
⇒
3
x
=
25
⇒
x
=
25
3
c
m
By Pythagoras theorem
A
C
2
=
A
B
2
+
B
C
2
=
625
9
+
25
=
625
+
225
9
=
850
9
⇒
A
C
=
√
850
3
c
m
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