yes
the formula for the area of a circle is pi r2 (pie are square). r is the radius. examples: radius of circle is 5. pi 52 = pi 25 = 78.53
Using 3.14 as Pi the area of circle is: 0
Area = (pi) (radius)2 = 25 pi = 78.54 square units (rounded)
The area of a circle with radius 5 is 25 pi. Concentric circles with radius 3 and 4 have areas of 9 pi and 16 pi. The concentric circle with radius four consumes the circle with radius 3. 25 pi minus 16 pi leaves 9 pi of the circle with radius 5 left over. 16 pi is slightly over three-fifths of the circle with radius 5.
Area = Pi(r)2 - A circle with a radius of 25 inches has an area of 1,963.5 square inches.
625 pi = 1,963.5 (rounded)
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
Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius squared
The area of a circle is equal to pi times the radius squared. So in your case it would be 5 squared, (25) times pi which is equal to ~78.5
The area of any circle is pi*r2. So, Area = pi * 52 = 3.14 * 25 = 78.5 ft2
Pi is related to the area and the circumference of the circle. The area is Pi multiplied by the radius of the circle squared and the circumference is Pi times the diameter of the circle. if you're wondering how it works, pi is the area of a circle with radius of 1 (unit), and the circumference of a circle with a radius of ½ (unit).
circumference of a circle = 2*pi*radius area of a circle = pi*radius squared