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Question

The area of the triangle formed by the points P(0,1) , Q(0, 5) and R(3, 4) is

A
16 sq. unit
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B
8 sq. units
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C
4 sq. units
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D
6 sq. units
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Solution

The correct option is D 6 sq. units
Plot the points and calculate the base and height. The base of the triangle PQR is PQ = 4 units and height is the distance of point R(3, 4) from the y-axis i.e. 3 units.
Then, area of triangle = 12×Base×Height = 12×4×3 = 6 units.

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