A = 530.9
The circumference of a circle with a 13-inch radius is: 81.68 inches (r x 2 x pi = circumference).
radius of a circle = 13 metersArea of a circle =π * radius2radius = square root of Area/π=√531/π=√ 531/3.1416=√ 169= 13
Using 3.14 as Pi the area of circle is: 530.66
Well, area of a circle is (pi)r^2 and your diameter is 13, so your radius is 13/2 so your area would be (pi)(13/2)^2 or 132.7322896 =] -ray
A circle with a radius of 13 units has an area of 530.93 square units.
If 13 inch refers to the diameter, then the radius is one-half that amount.
A = 530.9
The circumference of a circle with a 13-inch radius is: 81.68 inches (r x 2 x pi = circumference).
About 530.93 inches2
530.9 sq inches.
radius of a circle = 13 metersArea of a circle =π * radius2radius = square root of Area/π=√531/π=√ 531/3.1416=√ 169= 13
1.15 feet
Using 3.14 as Pi the area of circle is: 530.66
Well, area of a circle is (pi)r^2 and your diameter is 13, so your radius is 13/2 so your area would be (pi)(13/2)^2 or 132.7322896 =] -ray
The diameter of any circle is twice its radius. A circle with a radius of 13 inches will have 2 x 13 = 26 inches for a diameter.
The radius of a circle with a circumference of 13 feet is: 2.069 feet.