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Standard XII

Mathematics

Determinant

In the given ...

Question

In the given figure (not drawn to scale), the coordinates of P, Q and R are (3, 0) (0, 5) and (0, -5) respectively. Find the area of $Δ P Q R$ .

20 sq. units

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40 sq. units

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15 sq. units

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25/2 sq. units

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Solution

The correct option is C 15 sq. units

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Similar questions

Q. Tangents

P A

and

P B

are drawn to

x^{2} + y^{2} = 4

from the point

P (3, 0)

. Area of

△ P A B

is equal to

A point P(2, -4) is reflected in the line x = 0 to get image Q. Point Q is reflected in the line y = 0 to get the image R. Find the area of figure PQR.

Q. The vectors from the origin

O

to the points

A

and

B

\to A = 3^i - 6^j + 2^k

and

\to B = 2^i +^j - 2^k

respectively. The area of triangle

O A B

Area bounded by the curve

f (x) = x² - 1; x-axis; lines x = 0 and x = 2 is

P

is a variable point on the line

L = 0

. Tangents are drawn to the circle

x^{2} + y^{2} = 4

from

P

to touch it at

Q

and

R

. The parallelogram

P Q R S

is completed.
If

P \equiv (6, 8)

, then the area of

△ Q R S

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In the given figure (not drawn to scale), the coordinates of P, Q and R are (3, 0) (0, 5) and (0, -5) respectively. Find the area of ΔPQR.

The correct option is C 15 sq. units

In the given figure (not drawn to scale), the coordinates of P, Q and R are (3, 0) (0, 5) and (0, -5) respectively. Find the area of $Δ P Q R$ .