Area is 1,017.9 units2
A circle with a radius of 18 inches has an area of 1,017.88 square inches.
A circle with a radius of 18 centimeters has an area of 1,017.88 square centimeters.
Well, darling, the area of a circle is calculated using the formula A = πr^2, where r is the radius. So, plugging in 18 cm for the radius, we get A = π(18)^2 = 324π cm². So, the area of a circle with a radius of 18 cm is 324π square centimeters. Voilà!
The radius is 18 cm
The area of a circle can be calculated using the formula ( A = \pi r^2 ), where ( r ) is the radius. For a circle with a radius of 18 inches, the area would be ( A = \pi (18)^2 = \pi \times 324 ). This yields an area of approximately ( 1017.88 ) square inches when using ( \pi \approx 3.14 ).
1,017.9 m2
Divide the area by Pi. Take the square root of the result. This is the radius. Now double the radius to get the diameter. -> Answer = 18
A circle with a radius of 9 cm has an area of 254.47 square cm
A circle with a radius of 18 centimeters has an area of 1017.88 square centimeters.
The area is 1,020 square inches.
To find the area of an 18-inch circle, you can use the formula for the area of a circle, which is A = πr², where r is the radius. The radius of an 18-inch circle is 9 inches (half of the diameter). Therefore, the area is A = π(9 inches)² = π(81) ≈ 254.47 square inches.
Area of any circle = pi*radius squared