Using 3.14 as Pi the area of circle is: 1017.36
9 cm (r = d/2)
The perimeter is pi*r + 2r = 92.6 cm
The diameter is always double the radius so in this case, it is 18cm
The area of a circle if the radius is 9m 254.5m2
The radius of a circle with the area of 36 is 3.385
1,017.9 cm2
The general equation for the area of a circle is π*r2, where r is the radius of the circle, and π is pi, which is approximately 3.14159. The diameter of a circle is how far it is from one side of the circle to the other, and the radius is how far it is the from edge to the center, thus the radius is half the diameter. Therefore the area is π*(92) ~ 254.47
9 cm (r = d/2)
A = 254.47 cm2
The perimeter is pi*r + 2r = 92.6 cm
The diameter is always double the radius so in this case, it is 18cm
A sector with a radius of 2 cm can't have an arc of 18 cm. If the radius is 2 cm, then the entire circumference of the whole circle is a little less than 12.6 cm. Strange as it may seem, the area of that whole circle is a little less than 12.6 cm2 .
SA = 904.78 cm2
The radius of a circle is half of its diameter. If the diameter is 18 cm, then the radius would be 18 cm divided by 2, which equals 9 cm. Thus, the radius is 9 cm.
The area of a circle with a radius of 14.4 is 651.4
The radius of a circle with the area of 36 is 3.385
Area of a circle = pi*radius squared