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Byju's Answer
Standard X
Mathematics
Basic Proportionality Theorem
Given Δ ABC ∼...
Question
Given
Δ
A
B
C
∼
Δ
P
Q
R
And
A
B
P
Q
=
1
3
Find the ratio of their area.
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Solution
A
B
P
Q
=
1
3
Now,
a
r
(
Δ
A
B
C
)
a
r
(
Δ
P
Q
R
)
=
A
B
2
P
Q
2
=
(
1
3
)
2
=
1
9
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0
Similar questions
Q.
Given
Δ
A
B
C
i
s similar to
Δ
P
Q
R
ΔABCisΔPQR
. Where AB=1cm and PQ =3 cm .Find the ratio of their areas.
Q.
Given
Δ
A
B
C
∼
Δ
P
Q
R
, if
A
B
P
Q
=
1
3
then find
a
r
Δ
A
B
C
a
r
Δ
P
Q
R
Q.
Given
Δ
A
B
C
∼
Δ
P
Q
R
,
if
A
B
P
Q
=
1
3
,
then find
a
r
Δ
A
B
C
a
r
Δ
P
Q
R
.
Q.
Given
Δ
A
B
C
∼
Δ
P
Q
R
, if
A
B
P
Q
=
1
3
then find
a
r
Δ
A
B
C
a
r
Δ
P
Q
R
.
Q.
Δ
A
B
C
∼
Δ
P
Q
R
.
If area
(
A
B
C
)
=
2.25
m
2
, area
(
P
Q
R
)
=
6.25
m
2
,
P
Q
=
0.5
m
, then length of AB is:
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