Topics

# A person starts from A and travels 3 km. in the north east direction and then travels 4 km. in the south east direction and reaches B. The distance between A and B is

 A) 3 km. B) 4 km. C) 5 km. D) None of these

 C) 5 km.

Description for Correct answer:

A is the starting point and

B is the finishing point.

To find the distance between A and B

From $$\Large \triangle ADC, \angle B = 90 ^{\circ} ;\ AC = 3 km.\ BC = 4 km.$$

$$\Large AB^{2} = AC^{2} + BC^{2}$$

=$$\Large 3^{2} + 4^{2}$$

=$$\Large 9 + 16 =25$$

$$\Large AB = \sqrt{25} = 5$$

Part of solved Aptitude questions and answers : >> Aptitude

Similar Questions
1). A man travels 2 miles, turns left and travels another 4 miles, then turns right and travels yet another mile. How far is he from the starting point.
 A). 4 mile B). 5 miles C). 6 miles D). 7 miles
2). A large number of free electrons exist in
 A). insulator B). semi conductor C). non-metals D). metals
3). The excess of pressure inside a spherical bubble of radius r of a liquid of surface tension T is
 A). $$\Large \frac{T}{r}$$ B). 0 C). $$\Large \frac{2T}{r}$$ D). $$\Large \frac{4T}{r}$$
4). The refractive index of diamond is
 A). 1 B). 1.33 C). 1.6 D). 2.42
5). The digital camera is an input device mainly used to ......... images
 A). capture B). convert C). connect D). none of these

6). Radioactivity was discovered by
 A). Pierre Curie B). Madam Curie C). Rutherford D). Henri Becquerel