1 the radius of a circle is to be doubled. I find the ratio between the areas of both (given and obtained) the circle of and in detail
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Let the radius of circle be r
So original Area = πr²
New Radius = 2r
So New Area = π(2r)² = 4πr²
Ratio = πr² : 4πr² = 1 : 4
So original Area = πr²
New Radius = 2r
So New Area = π(2r)² = 4πr²
Ratio = πr² : 4πr² = 1 : 4
catty0:
thank you very much
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Step-by-step explanation:
the ratio of a circle is to doble find the ratio area of both circle
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