Cutting a circle into equal sections of a small central angle to find the area of circle by using the formula A=πr^2 and verify the formula by calculating the radius and area of circular objects (like wheel of vehicle, circular plate, etc
2 answers
Cutting a circle into equal sections of a small central angle to find the area of circle by using the formula A=πr^2 and verify the formula by calculating the radius and area of circular objects (like wheel of vehicle, circular plate, etc
impatient much? give someone a chance to see the problem before you post it again! (At least you didn't start a whole new thread, so thanks for that)
If you cut the circle into very thin sections, they are approximately triangles.
Each is of height r and the sum of the bases is just the circumference of the circle, 2πr
Adding up all the areas, you get
1/2 r * 2πr = πr^2
If you cut the circle into very thin sections, they are approximately triangles.
Each is of height r and the sum of the bases is just the circumference of the circle, 2πr
Adding up all the areas, you get
1/2 r * 2πr = πr^2
1 answer