Basic Formulas of Circles
The following are the formulas relevant to Circles questions:
S.No | To Calculate | Formulas |
---|---|---|
1 |
Diameter (D) |
2r |
2 |
Circumference of a circle |
2 π r |
3 |
Area of a circle |
π*(r^2) |
4 |
Arc length formula |
⇒( θ/360)* Circumference |
5 |
Area of sector formula |
⇒( θ/360)* Area |
Where
D - Diameter
r - Radius
π - Pi (value is approximately equal to 3.14)
Quick Tip: Do you know? You can learn Circles formulas quickly if you first understand the fundamental concepts of Circles.
FAQsFAQs
How do you benefit from learning Circles formulas?
One of the significant benefits of understanding Circles formulas is the capability to quickly and accurately address simple formula-based questions.
How to remember Circles formulas for a longer time?
Following are the techniques you can use to memorise Circlse formulas:
For a start, you can start understanding the concepts of the Circles. It will help you find out why a formula is used.
Keep a separate piece of paper and write down each formula on the Circles topic you need to memorise.
Write down and examine each Circles formula, but this time with intervals. Write the equation, then take a 2-minute break to think about it before writing it again.
Your memory is more likely to associate with the formula you want to remember if you use it more often. Solve the problems employing the formula.
Visualise and repeat out loud the formula occasionally. Create Circles formulas flashcards to help with this. You can also use these flashcards while practicing the Circles questions.
The formula should be written down and posted somewhere you will see daily. They'll be subconsciously imprinted into your memory.
How conceptual understanding of Circles topic helps in remembering its formulas?
Conceptual understanding will help you to make sense of the Circles formulas. Conceptual understanding is concentrated on describing why things happen as opposed to how to make them happen. They help you understand the true motive for employing the Circles formulas.