
a.
The coordinates of the vertices of the surrounding rectangle and calculate the area.
a.

Answer to Problem 63E
The area of the rectangle is
Explanation of Solution
First finding the coordinates by seeing how the rectangle is formed by the lines
So, the line equation by noting he coordinates of the points on them. So, the four vertices of the rectangle are given by,
The area of the rectangle id then simply,
Conclusion:
Hence, the area of the rectangle is
b.
The area of the red tringle by subtracting the area of the three blue triangles from the area of the rectangle.
b.

Answer to Problem 63E
The area of the red tringle by subtracting the area of the three blue triangles from the area of the rectangle is
Explanation of Solution
Calculation:
So, the area
Conclusion:
Hence, the area is
c.
By using
c.

Answer to Problem 63E
Showed that the area of the rectangle is giving by the
Explanation of Solution
Given:
Calculation:
First expand the determinant given the 3rd column,
The sign of the difference arises from the loss of generality because the ordering picked for
Conclusion:
Hence, area of the rectangle is giving by the
Chapter 10 Solutions
Precalculus: Mathematics for Calculus - 6th Edition
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