ANSWERING QUESTIONS

1. Explain how to obtain the number phi?
 Actual value of Pi is not 22 / 7, but 3.14159 ... (not to). 
When this number behind the comma can be counted up to 1 trillion digits, what for us is quite simple to use 5 to 6 digits only. 
Not recommended to use 22 / 7 in countingdown serious in areas such as science and engineering, because value 22 / 7> Pi. 
Besides 22 / 7, 335/113 so known as a numeric value to a value for Pi. 
Ciricle strap is made, then: 
Phi = 22 * D 
22 = 22 / 7 * 7 
22 = 22 
7 meters diameter appropriate. 
If the number phi = 3.14 ...., Regardless of digits behind the comma, then still less than 22 Meters

2. Explain how to obtain the formula abc?

Quadratic formula is also known by the name 'abc formula used to calculate the root-square root of the equation that depends on the values of a, b and c of a quadratic equation.

 determine how a concave / convex parabola formed by the quadratic function. A value> 0 causes the parabola opens upward, while a value <0 will cause the parabola opens down. 
b determine approximately the position of parabola x top, or from the mirror symmetry axis kurva formed. Position is precisely -b/2a. 
c determine the intersection of the parabola formed with the y axis, or when x = 0.

3. explain how to obtain a wide area bordered by y = x ^ 2 and y = x +2!

4. Explain how to determine the volume of cone?

 In geometry, a cone-shaped pyramid is a special circle of repose. 
The vertical cone does not form a triangle, but the field is called a blanket curved cone.
V= 1/3 phi.r^2.t

5. Explain how to prove that in sigitiga amount on degrees 180 degree!
 Angle DCE = angle CAB (because sides) 
Angle BCE = angle ABC (as opposed in) 
  Angle ACB + Angle BCE+ Angle ECD located in one line (180degree)
Angle ACB + Angle BCE+ Angle ECD = 180degree
Angle ACB + Angle ABC + Angle CAB = 180degree
Provently.

6. Explain how to determine the amount of the emergence of probability numbers greater than six of the two dice are thrown once!

7. Explain how to determine the line of equality through (10.0) and offensive circle x ^ 2 + y ^ 2 = 9!

8. Explain how to prove the theorem integral! 

9. Explain how to determine the amount of the first 200 odd!

10. Explain how to paint / menbuat cube-known elements!