Question

How to find area of a circle inside a square with side 4?

Answer 1

`=color(blue)(12.56cm^2`

Explanation:

When a circle is completely inscribed within a circle, the radius of that particular circle is half the side of the square.

So in this case:
The radius: `r=4/2 = 2cm` (assuming the unit to be in cm)

Area of a circle is given by formula:
`color(blue)(pir^2`
Where `pi` is of constant value `3.14`

So, area `color(blue)(pir^2) = 3.14 *(2)^2`
`=color(blue)(12.56cm^2`