Finding the Area of a Circle with a Radius of 4

To find the area of a circle with a radius of 4, we can use the formula:

[ A = \pi r^2 ]

Substituting the value of the radius (4) into the formula, we get:

[ A = \pi \times 4^2 ] [ A = \pi \times 16 ] [ A = 16\pi ]

So, the area of a circle with a radius of 4 is [ 16\pi ] square units.