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Question
Two men, starting at the same point, walk in opposite directions for 4 meters, turn left and walk another 3 meters. What is the distance between them?
7 meters
14 meters
10 meters
6 meters
ANSWER : 3
Descrption
In Right - angled triangle <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>∆</mo><mi>O</mi><mi>A</mi><mi>D</mi><mo>,</mo><mi>O</mi><mi>D</mi><mo> = </mo><msqrt><mi>O</mi><msup><mi>A</mi><mn>2</mn></msup><mo> + </mo><mi>A</mi><msup><mi>D</mi><mn>2</mn></msup></msqrt><mspace linebreak = "newline"/><mo> = </mo><msqrt><msup><mn>4</mn><mn>2</mn></msup><mo> + </mo><msup><mn>3</mn><mn>2</mn></msup></msqrt><mo> = </mo><mn>5</mn><mo> </mo><mi>m</mi><mi>i</mi><mi>t</mi><mi>e</mi><mi>r</mi><mo> </mo><mspace linebreak = "newline"/><mi>S</mi><mi>i</mi><mi>m</mi><mi>i</mi><mi>l</mi><mi>a</mi><mi>r</mi><mi>l</mi><mi>y</mi><mo>,</mo><mo> </mo><mi>f</mi><mi>o</mi><mi>r</mi><mo> </mo><mo>∆</mo><mi>O</mi><mi>B</mi><mi>C</mi><mo>,</mo><mo> </mo><mi>O</mi><mi>C</mi><mo> = </mo><mn>5</mn><mo> </mo><mi>m</mi><mi>i</mi><mi>t</mi><mi>e</mi><mi>r</mi><mo> </mo><mspace linebreak = "newline"/><mo>.</mo><mo>'</mo><mo>.</mo><mo> </mo><mi>T</mi><mi>h</mi><mi>e</mi><mo> </mo><mi>d</mi><mi>i</mi><mi>s</mi><mi>tan</mi><mi>c</mi><mi>e</mi><mo> </mo><mi>C</mi><mi>D</mi><mo> = </mo><mo> </mo><mn>5</mn><mo> </mo><mo> + </mo><mn>5</mn><mo> </mo><mo> = </mo><mn>10</mn><mo> </mo><mi>m</mi><mi>i</mi><mi>t</mi><mi>r</mi><mi>e</mi></math>
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