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Question
ABCD is a rectangle whose three vertices are B (4,0), C (4,3) and D (0, 3). The length of one of its diagonals is
Options
5
4
3
25
Solution
BD = \[\sqrt{\left( 0 - 4 \right)^2 + \left( 3 - 0 \right)^2}\]
\[= \sqrt{4^2 + 3^2}\]
\[ = \sqrt{25}\]
\[ = 5 \text{ units }\]
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