Problem 44 of 7
Compute the area of the axis-aligned rectangle with vertices 0, 5; 3, 5; 3, 9; 0, 9.
Hints
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find base and height from coordinate differences.
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Rectangle sides must be parallel to coordinate axes.
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Solution
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1. Find the horizontal side length from x-coordinate difference.
2. Find the vertical side length from y-coordinate difference.
3. Multiply base by height.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Using perimeter or diagonal length.