Arc Length Formula and Sector Area Formula Explained!

This lesson answers the questions: What is arc length formula? What is sector area formula? How do I find arc length? How do I find sector area? What is a central angle? How do I find an arc?

This video lesson includes a free lesson guide and equation of a circle worksheet with an answer key. Click the links below to get yours:

[TDWIND]

Thank you so much u made a 1-hour lesson in 5 minutes and it was super clear

[juliemartinez]

Hi. Just wanted to mention that at the end of the video, you actually forgot to multiply by pi. The final answer should be 13.74, not 4.4 cm squared. Thanks for all the great videos. You guys are awesome.

[more]

5:01 the answer is wrong, you forgot to multiply the result by π, so the real result is 13.7cm^2

[mikahcorral]

You should have so many more subscribers

[Bayckun]

The formula used to find the sector area is completely wrong. It should be theta divided by 360 multiplied by pie radius squared.

[entertainmenthubs]

Just saying when you edit the videos make sure that the maths is correct instead of adding weird sound effects.