In a rectangular axis system, what is the area of a parallelogram with the coordinates: (3,5), (9,5), (2,7), (8,7) ?  Choose one:
A) 21.
B) 28.
C) 35.
D) 12.
E) 52.
12.elta x will give us the dimension of one side of the parallelogram = 9-3= 
<gadget id="calculator">9-3</gadget>
<output>6</output>
6 unit   12.elta y will give us the dimension of the other side of parallelogram= 7-5= 
<gadget id="calculator">7-5</gadget>
<output>2</output>
2 unit   Area of parallelogram= 6*2= 
<gadget id="calculator">6*2</gadget>
<output>12</output>
12   ANSWER IS 12.
<result>D</result>
In a rectangular axis system, what is the area of a parallelogram with the coordinates: (3,5), (9,5), (2,7), (8,7) ?