113.1 cm2
If the diameter is 12 cm the radius is 6 cm.
Radius of a circle is half of its diameter and so 12/2 = 6 cm
The answer is 72, i think!
If you are talking about 9 and 12 inch diameter, then divide both by 2 to get the radius. The area of a circle is pi (3.1415 is good for most calculations) multiplied by the square of the radius. So for the 12 inch circle, the radius is 6. The square of the radius is 36, and multiplying this by pi gives approximately 113.1 square inches. Now the 9 inch circle has a radius of 9/2 or 4.5. Squaring this we get 20.25, which multiplied by pi is approximately 63.6 square inches. If 9 and 12 were already the radius in the problem, just don't divide by 2 since you already have the radius.
the radius is one half the diameter,or 6
The area of a circle with radius r is pi*r*r where pi = 3.1416 approx. When r = 6 cm, the area is 113.1 sq cm.
113.0973355cm
The area of a circle can be calculated using the formula A = πr^2, where r is the radius of the circle. Since the diameter is twice the length of the radius, the radius of a circle with a diameter of 6 cm is 3 cm. Plugging this value into the formula, we get A = π(3)^2 = 9π cm^2. Therefore, the area of a circle with a diameter of 6 cm is 9π square centimeters.
The circumference of a circle if the if the radius is 6 cm is: 37.7 cm
area of circle is πr² (3.14)(6)² 3.14 * 36 = 113.45 cm² ■
r = 1.38 cm
A circle with a radius of 6 cm has an area that is about 113.1 cm. 3/4 of that is 84.825 cm
It is approx 113.1 cm squared.
Area of circle = pi x radius x radius where pi = 3.14159 If radius = 6 cm then Area = 3.14159 x 6 x 6 sq cm = 113.097 sq cm
The area of a circle is calculated using the formula ( A = \pi r^2 ), where ( r ) is the radius. For a radius of 6 cm, the area would be ( A = \pi (6)^2 = 36\pi ) cm². This is approximately 113.1 cm² when using ( \pi \approx 3.14 ).
If the diameter is what you are talking about that is 6 cm, you must divide that number by two to find the radius because the radius is half a diameter. The radius of a circle with a diameter of 6 cm. would be 3 cm.
If the diameter is 12 cm the radius is 6 cm.