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Which of the following is the area of a quadrilateral with vertices at (-4,2),(1,2),(1,-3) and (-4,-3)

A)20units^2

B)25units^2

C)31units^2

D)36units^2

Answer :

Answer:

The correct option is B.

Step-by-step explanation:

The given vertices are (-4,2),(1,2),(1,-3) and (-4,-3).

Plot these point on a coordinate plate. From the graph it is noticed that the given quadrilateral is a square.

Distance formula:

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Use distance formula to find the side length.

[tex]AB=\sqrt{(1-(-4))^2+(2-2)^2}=\sqrt{5^2}=5[/tex]

[tex]BC=\sqrt{(1-1)^2+(-3-2)^2}=\sqrt{(25}=5[/tex]

Since both consecutive sides are equal therefore it is a square.

Area of a square is

[tex]A=a^2[/tex]

Where, a is side length.

The side length of the square is 5. So, area of ABCD is

[tex]A=(5)^2[/tex]

[tex]A=25[/tex]

Therefore the area of quadrilateral is 25 units square. Option B is correct.

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