Find the rate of change of the area of a circle with respect to its radius r when r = 5 cm.
Area of a Circle = π r2
Where, r = radius of a circle.
We need to find, 
, where A = Area of the Circle and r = radius of Circle.
At r = 5 cm we have,
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Find the rate of change of the area of a circle with respect to its radius r when r = 5 cm.
Area of a Circle = π r2
Where, r = radius of a circle.
We need to find, , where A = Area of the Circle and r = radius of Circle.
At r = 5 cm we have,