**A** **circle** has a diameter of 12 meters. Find the **area** **of** the **circle**. Solution: Let's begin with the **formula** for the **area** **of** **a** **circle**: From the **formula**, we see that we need the value of the radius. To find the **circle's** radius, we divide the diameter by 2, like so: Now, we can input the radius value of 6 meters into the **formula** to solve for the **area**:. Finally, let us now consider two examples on how to calculate the **perimeter of a segment of a circle**. Example 1: Find the perimeter of the segment **of a circle** of radius , if the **chord** subtends angle at the centre. {Take π = }. Example 2: AB is a **chord of a circle** with centre O and radius . <AOB =. **A** = C2/4π. Example: Assume the circumference of the **circle** is 7cm. Solution: We have given the circumference of the **circle**, so we will use the **formula** given above to find the **area** **of** the **circle**. **A** = C2/4π. A = 7*7/4* (22/7) A = 3.89 cm2. We have got the **area** **of** the **circle** is A = 3.89 cm2.

**chords**, tangents, arcs, etc. Test your knowledge of

**chords**, tangents, arcs, etc. Take Quizzes. Animal; Nutrition; ... Some students get confused identifying which

**formulas**are used when it comes to getting the circumference or

**area**

**of**

**a**

**circle**. The confusion comes in knowing which one to... Questions: 15 | Attempts: 4127.

**Area**

**of**

**a**

**circle**⇒ transform triangle so it has a vertex at (0, 0) Internally divide a line segment in the ratio m:n ... or use

**formula**in log tables Common

**chord**(or tangent)

**circles**s1 and s2 expressed in the form then

**Circles**touching axes touches xaxis touches yaxis. The

**formula**for the

**area of a circle**can be proved using various techniques. Some of the more advanced techniques include the use of Calculus. However, here we are going to simplify the demonstration a bit by using the following diagram:.