Find the perimeter and area of the figure determined by the points.
Perimeter = 22
Area = 30
Given information:
The given points are (-2, 1), (-2, 6) (4, 6) (4, 1)
Concept used:
- First, find the value for x on the x-axis.
- Next, find the y-value on the y-axis.
- The point should be plotted at the intersection of x and y.
- Finally, plot the point on your graph at the appropriate spot.
- Then join all the points to make a closed figure for calculating perimeter and area.
Calculation:
The given points are A(-2, 1), B(-2, 6), C(4, 6), D(4,1)
Plotting the points in the graph -
Perimeter of enclosed figure ABCD is = AB+BC+CD+DA
Using distance formula −
A(-2, 1), B(-2, 6)
AB = CD
So CD =
B(-2, 6), C(4, 6)
BC=DA
So DA=6
Perimeter of enclosed figure ABCD-
Area of enclosed figure ABCD is −
As AB=CD and BC=DA
Therefore ABCD is a rectangle.
Area of rectangle ABCD =
Length = DA =6
Breadth =AB 5
Chapter P Solutions
EBK PRECALCULUS:GRAPHICAL,...-NASTA ED.
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