How fast the area of a circle increases when its radius is 5cm.
(i) respect to radius (ii) with respect to diameter.

Explanation

To solve the problem of how fast the area of a circle increases when its radius is 5 cm, we will follow these steps:

### Step 1: Understand the formula for the area of a circle
The area \( A \) of a circle is given by the formula:
\[ A = \pi r^2 \]
where \( r \) is the radius of the circle.
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