A circle with a radius of 2 cm has an area of 12.57 square cm.
Area of ANY circle is (pi) x (radius)2 .
The radius is 2 cm
A = Pi(r)2: A circle with a radius of 8 cm has an area of 201.06 square cm.
The formula is: A = PI(r)^2 A circle with a radius of 29 cm has an area of 2,642.08 square cm.
A circle with a radius of 4.8 cm has an area of 72.38 square cm. The formula is: A = PI(r)^2
A=Pi(r)2 - A circle with a radius of 4 cm has an area of 50.27 square cm
Area = about 12.57cm2
Area of circle = pi * radius squared A = pi(4.4 cm)^2 = 60.8 centimeters squared ( call it 61 cm^2 )
The radius of a 2 cm circle is: 1 cm
Area of circle: pi*8^2 = 64*pi square cm
The probability as a fraction that a point chosen at random within a circle of radius 10 cm will be inside a concentric circle of radius 4 cm is the ratio of the area of the smaller circle (4 cm radius) to the area of the larger circle (10 cm radius). Therefore, the probability is (4^2)/(10^2) = 16/100 = 4/25.