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Area of a circle formula: pi*radius^2 (pi multipled by (radius squared))
Pi is a number with an infinite number of decimal places, it is on most good calculators (the symbol looks a bit like a bridge, or something from Stone Henge). If you can't find the function for pi on your calculator, use the approximation pi=3.14159.
So, Area=3.14159 multiplied by 3^2.
What else can I help you with?
What is the area of a circle with a radius of 3 feet?
The area of a circle with a radius of 3 feet is: 28.27 square feet.
What is the area of a circle with the radius of 3 cm?
A circle with a radius of 3 cm has an area of 28.27 square cm.
Formula of a radius when the area is given?
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)
How many square miles in a 3 mile radius?
Area of a circle = pi R2 = 9 pi = 28.27 square miles (rounded)
What is the area of the shaded sector of a circle when the radius is 3?
0. There is no circle so no shaded area of a circle!
What is the radius of a circle with an area of 52 square miles?
Radius = 4.068 miles (to 3 dp)
What is the area of a circle with a radius of 3 feet?
The area of a circle with a radius of 3 feet is: 28.27 square feet.
What is the area of a circle with the radius of 3 cm?
A circle with a radius of 3 cm has an area of 28.27 square cm.
What is the area of a circle with a radius of 3 meters?
A circle with a radius of 3 meters has an area of 28.27 square meters.
What is the area of a circle with a radius of 3 in by 4 in?
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.
What is the area of a circle with a radius of 3in?
A circle with a radius of 3 inches has an area of 28.27 square inches.
What is the area of a circle with a radius of 3'-6?
Area = pi*radius squared
What is the area of a circle that has a radius of 3?
9pi
What is the area of a circle of radius 3?
28.26
What is area of circle of 3 radius?
29.6088132
Formula of a radius when the area is given?
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)
How many square miles in a 3 mile radius?
Area of a circle = pi R2 = 9 pi = 28.27 square miles (rounded)
