Directions(1-2): Bala walked 25km towards west, took a left turn and walked 15km. He again took a left turn and walked 30km. He then took a right turn and stopped.
1. Now he was facing which direction ?
A. West
B. East
C. South
D. North
E. None of these
2. Instead of turning right at the end if he took left and walked 20km, what is the shortest distance to his starting point?
A. [latex]3\sqrt{7}[/latex] km
B. [latex]2\sqrt{5}[/latex] km
C. [latex]7\sqrt{2}[/latex] km
D. [latex]5\sqrt{2}[/latex] km
E. None of these
3. Raghav starts walking in south direction and walks a distance of 7 meters. Now he tooks a left turn and walk 6m. Again he takes a left turn and walk 15m and reached a point P. Find the distance between starting point and P and in which direction is the person from the initial point.
A. 10m, south east
B. 10m, north east
C. 20m, north west
D. 20m, south west
E. None of these
4. Dheepthi started from point A in south direction. After walking for 4 m she turned to her right and walked 5 m. Now she turned to her left and walked 3 m after which she turned to her right. Now she walked 4 m and turned to her right again and walked 15 m. Now finally she turned to her right and after walking for 7 m, she stopped at point B. What is the distance AB?
A. [latex]2\sqrt{34}[/latex] m
B. 34 m
C. [latex]3\sqrt{17}[/latex] m
D. [latex]2\sqrt{17}[/latex] m
E. None of these
5. Riya started from her home to office. She started in east direction. After walking for 4 m she turned to her left and walked 8 m, now she turned left and walked 2 m. After this she turned to right walked 4 m. Now after turning to her right she walked 13 m and reached office. Find the shortest distance between her office and home.
A. 87 m
B. [latex]2\sqrt{17}[/latex] m
C. 26 m
D. [latex]3\sqrt{41}[/latex] m
E. None of these
Answers and Explanations
1. Answer - Option C
Explanation -
2. Answer - Option D
Explanation -
[latex]{x}^{2} = {5}^{2} + {5}^{2}[/latex]
x = [latex]\sqrt{50} = 5 \sqrt{2}[/latex]
3. Answer - Option B
Explanation -
[latex]{x}^{2} = {6}^{2} + {8}^{2}[/latex]
x = [latex]\sqrt{100} = 10[/latex]
4. Answer - Option D
Explanation -
[latex]{x}^{2} = {8}^{2} + {2}^{2}[/latex]
x = [latex]\sqrt{68} = 2 \sqrt{17}[/latex]
5. Answer - Option D
Explanation -
[latex]{x}^{2} = {15}^{2} + {12}^{2}[/latex]
x = [latex]\sqrt{369} = 3 \sqrt{41}[/latex]