class 9 maths practical to determine the area of circle
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Determine the area of circle
Step-by-step explanation:
Cut the circle in 16 Equal parts
Arrange them as shown in figure like a rectangle
2 ( length of rectangle ) = Perimeter of circle = 2πr
=> 2 ( length of rectangle ) = 2πr
=> length of rectangle = πr
Breadth = r = radius of circle
Area of rectangle = length x breadth
= πr * r
= πr²
Hence area of circle = πr²
Learn more:
If radius of a circle is 21 cm then find its area. - Brainly.in
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