Calculate the Perimeter of the Shape - Exercise 27.11 Question 1 (b)

Cambridge IGCSE Mathematics: Core & Extended, 3rd EditioneE

Exercise 27.11 Question 1 (b)

Calculate the Perimeter of the Shape (Sector of Circle)

Method 1
Slander Website for Solution - Method 1

Method 2   at MIR GLOBAL ACADEMY

 

KEY POINTS FROM MATRIC MATHEMATICS

COROLLARY: These are formulas or Statements derived from main Formula / Theorem.

• Theorem may have many proofs.

• For convenience Figures may be shown separately from main figure.

• Pythagoras' theorem can be proved using proportionality of the sides of two similar triangles. Its converse can be proved using Congruent Triangles (SSS).

How to prove the basic theorems in geometry?

(Google Search)

1. Use the previous theorems, postulates, definitions and properties you already learned to prove new theorems. That's the principle of geometry, as you go by the lessons, you use what you learned before to learn new lessons.

2. Label the Drawing

3. Know where you are going (Given and Have to Prove)

Actually you can use two kinds of proving:

1. Direct and
2. Indirect.

In direct, you prove step by step until you come up with the desired statement.

In the other hand, indirect proving is when you prove the opposite of what you want to prove.

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Geometry Lesson: Postulates, Theorems and Proofs (Simplifying Math)

Calculating Time using Casio Calculator for IGCSE, O' Level Mathematics Paper

Calculator Skills

Calculating Time using Casio Calculator for IGCSE, O level Mathematics Paper

This video demonstrate Calculating Time Taken for O'Level, IGCSE Mathematics Paper using Casio Calculator.

Student can find such question in their Mathematics paper in topic like:
1. Time Taken
2. Travel Graphs
3. Distance, Time and Speed 

F.Sc Mathematics

F.Sc Mathematics

Math City

All on Line Free

Ilm Ki Dunya

Society of Higher Education & Industrial Research

Muslim Mathematician

Muslim Mathematician

Abu Ja'far Muhammad ibn Musa Al-Khwarizmi

Born: about 780 in possibly Baghdad (now in Iraq)

Died: about 850

This is taken from a stamp from the former USSR

Rate (mathematics)

In mathematics, a rate is a ratio between two measurements with different units. If the unit or quantity in respect of which something is changing is not specified, usually the rate is per unit time. However, a rate of change can be specified per unit time, or per unit of length or mass or another quantity.

A rate defined using two numbers of the same units (such as tax rates) or counts (such as literacy rate) will result in a dimensionless quantity, which can be expressed as a percentage (for example, the global literacy rate in 1998 was 80%) or fraction or as a multiple.

An average rate can be calculated using the total distance travelled between a and b, divided by the travel time

An instantaneous rate can be determined by viewing a speedometer.

Minimum Point of a Quadratic Graph

Minimum Point of a Quadratic Graph

Differentiating the function and setting its derivative to 0 is the fastest way however if you do not know calculus then an alternate method is to complete the square. 

But for any quadratic in the form ax^2 + bx +c, where a, b and c are constants: the lowest point is when 

x = -b/2a.