r = 4.5 feet
Since your circle has a diameter of 9 feet (the definition of a "9 by 9" circle), the radius is half of that distance. In this case, your radius is 4.5 feet or 54 inches.
the diameter of a circle with the radius of 9m is 18m
the radius of a circle is half the diameter, so half of 1.8 is .9. The radius is .9km.
The answer is 9
56.549
The diameter of a circle is twice the radius. A circle with a radius of 9 would have a diameter of 18. (9*2=18).
Since your circle has a diameter of 9 feet (the definition of a "9 by 9" circle), the radius is half of that distance. In this case, your radius is 4.5 feet or 54 inches.
A circle with a radius of 9 inches has a circumference of 56.55 inches.
The radius is 1.43
A circle with a radius of 9 feet has an area of 254.47 square feet.
If a circle has a circumference of 18pi, the radius is 9.
the diameter of a circle with the radius of 9m is 18m
The radius is about 1.432 units.
The area of a circle with a radius of nine centimeters is: 254.5 cm2
the radius of a circle is half the diameter, so half of 1.8 is .9. The radius is .9km.
If you triple the radius of a circle, the area will increase by 9. Area is proportional to the square of the radius.
Area of a circle of radius r = πr2Area of circle of radius 9 In = π(9)2 = π x 81 , putting value of pi we get= 3.14159625 x 81 = 254.46 sq. In