What is the area and circumference of a circle with a radius of 3in.

Area = pi * radius squared

A = pi*r^2
A = 3.14 * 9
A = 28.26 square inches

im the first comment in years O_O

Like I said with awl, I found the circumference forumla, which is:

c = pi times diameter
OR
c = 2 times pi times radius

I can't find the area formula. :(

Just place in 3 where I said "radius."

Hope I helped! :)

To find the area and circumference of a circle with a given radius, we can use the formulas:

Area of a circle = π * radius^2
Circumference of a circle = 2 * π * radius

In this case, the radius is given as 3 inches.

To find the area, we substitute the radius into the formula:

Area of a circle = π * 3^2

Simplifying, we have:

Area of a circle = 9π square inches

The area of the circle is 9π square inches.

To find the circumference, we substitute the radius into the formula:

Circumference of a circle = 2 * π * 3

Simplifying, we have:

Circumference of a circle = 6π inches

The circumference of the circle is 6π inches.