Area = Пr2 = 3.14159 x 32 = 28.27
A circle with a radius of 3 meters has an area of 28.27 square meters.
It's half of the area of the whole circle...
If you mean area of a circle with a radius of 25 cm then it is:- Area = pi*252 = 1963.495 square cm to 3 decimal places
When you try to figure out an area of a circle, you square the radius, then multiply it by pi to get the area of a circle. A radius square is radius x radius, or radius squared.
Oh, dude, you're throwing math at me? Like, okay, fine. So, the area of a circle is πr^2, and if the area is 28.26, then you just plug that in and solve for the radius. The radius would be 3. So, like, there you go, math wizard!
The area of a circle with a radius of 3 feet is: 28.27 square feet.
A circle with a radius of 3 cm has an area of 28.27 square cm.
A circle with a radius of 3 meters has an area of 28.27 square meters.
A circle has only one measure for its radius. A shape that has a "radius" of 3 in by 4 in cannot be a circle.
A circle with a radius of 3 inches has an area of 28.27 square inches.
Area = pi*radius squared
9pi
28.26
29.6088132
Since you said radius, I assume you mean Circle or Sphere. Circle: Area = Pi * radius^2 therefore, Radius = Square Root of (Area/Pi). Sphere: Area = 4/3 Pi * Radius^3 therefore, Radius = CubeRoot of (3/4 * Area/Pi)
0. There is no circle so no shaded area of a circle!
A = 28.274 units2