**Lecture notes: Chapter 1-introduction** ** units and scale**

**Exercises**

**1- Define: surveying, the meter, 1 radian, 1 degree, 1 grad,**

**2-What are the primary types of surveying , what are the basic types of surveying (according to the applications) , what are the types of surveying (according to the method of surveying)**

**3-Using suitable sketches outline the basic methods of locating a detail point with respect to a surveying line**

**4-What is meant by working from the whole to the part (use a sketch)**

**5- Convert 123.8765 grade to deg.min.sec and to radiance**

**6- Convert 2.765476 rad to deg.min.sec and to grads**

**7-Make a comparison between small scale maps and large scale maps**

**8- What are the benefits of using graphical scales**

** 9- A distance of 83.87m was measured by a 30m tape. After the measurements, it was found that the first 15cm of the tape was cut. What is the correct distance.**

**10- The following distances was measured with a 30m tape a- 18.52m , b- 52.86m**

**After the measurements it was found that the zero points was not at the beginning of the tape but to the back by 28cm and the tape was held mistakenly at the tip of the tape, find the corrected distances**

**11-Convert 129.7865grad into deg.min.sec convert 5.876544 rad into grad.**

** 12- if csec α= 2.675432 find α in grad **

** 13- A man bought a piece of land =20×25 m= 500m ^{2}. Later he found that the 25m side is slopped by 20% , the 20m side is horizontal. What is the actual area he bought.**

** 14- ****If an area measured on a map plotted with a scale= 1/2000 equal to 400 cm**^{2}**, ****what would be the area on a map having a scale= 1/ 5000.**