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

Answer 1

BD = \[\sqrt{\left( 0 - 4 \right)^2 + \left( 3 - 0 \right)^2}\] 

\[= \sqrt{4^2 + 3^2}\]
\[ = \sqrt{25}\]
\[ = 5 \text{ units }\]