if the circumference of the circle increases from 2 to 4 then the area is _______
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area becomes 4 times of initial value...
A1 - initial area
A2 - final area
R1 - initial radius
R2 - final radius
i.e.
A2 / A1 = (R2 / R1)^2 = ( 2π R2 / 2π R1 )^2 = ( 4 / 2 )^2 = 4
A2 = 4 x A1
A1 - initial area
A2 - final area
R1 - initial radius
R2 - final radius
i.e.
A2 / A1 = (R2 / R1)^2 = ( 2π R2 / 2π R1 )^2 = ( 4 / 2 )^2 = 4
A2 = 4 x A1
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