Loading...

**MEASUREMENT**

Loading...

Loading...

Loading...

**circle**

**CONTENT**

**1. Introduction**

**2. Circle**

**3. Circumference of Circle**

**4. Have a try!**

**LEARNING OBJECTIVES:**

**To understand the concepts of circumference of circle.**

**Real life example for circle in shape**

**circle shape traffic sign board**

**Bicycle wheel**

**clock**

**Circle:**

*** A circle is a round-shaped figure that has no corners or edges.**

*** In geometry, a circle can be defined as a closed, two-dimensional curved shape.**

Radius

**Diameter**

**Circumference of Circle**

**All circles are similar to one another. So, the ratio of the circumference to that of diameter is a constant, that is**

**Circumference**

**= constant [say p (pi)]**

**Diameter**

the circumference of circle, C = 2 || r units.

|| = 3.14 (approximate)

r = Radius

|| = 3.14 (approximate)

r = Radius

**___**

**___**

**circumference**

**EXAMPLE**

**Calculate the circumference of the bangle , diameter of bangle is 6 cm.**

Solution

Given, d = 6 cm ,

Radius = d / 2

= 6 / 2

r = 3 cm

Circumference of a circle = 2 || r units

= 2 x 3.14 x 3

= 18.84

The circumference is 18.84 cm.

Given, d = 6 cm ,

Radius = d / 2

= 6 / 2

r = 3 cm

Circumference of a circle = 2 || r units

= 2 x 3.14 x 3

= 18.84

The circumference is 18.84 cm.

**_**