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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.
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Whats the area of a 9 inch diameter?
If you mean a circle area than A = 63.61725 inch². Area A = pi times diameter² / 4.
What Is the area of a circle with a 6 inch diameter?
A=pi X radius squared 3.14 X 9=28.26 sq. inches
What is the area of a circle with a radius of 9 ft?
A circle with a radius of 9 feet has an area of 254.47 square feet.
What is the square ft of a 9 ft circle?
The area of a circle with a diameter of 9 feet is 63.6 sq ft (approx).The area of a circle with a diameter of 9 feet is 63.6 sq ft (approx).The area of a circle with a diameter of 9 feet is 63.6 sq ft (approx).The area of a circle with a diameter of 9 feet is 63.6 sq ft (approx).
What is the area of a circle that has a diameter of 9 cm?
The area of a circle is figured out using the formula Now, the circle we are given has a radius of 9cm. So, the area of the circle would be: Area = 3.14 x (9)2 = 3.14 x 81 = 254.34 cm2 The area of the circle in question is 254.34 cm2
Is the area of two 3 inch circles equal to the area of a 6 inch circle?
No. Area of 3 inch circle is 9/4 pi so two of them total 9/2 ie 4.5 pi. Area of 6 inch circle is 9 pi, the equivalent of 4 of the smaller circles!
What is the area of a circle with a 9 inch radius?
The area is 254.47 in2
What is the area of 18 inch diameter circle?
Area = pi*9*9 square inches
If the radius of a circle is two inches what is the area and circumference?
2 inch radius = 12 9/16" circumference & an area of 12.56637 sq. inches.
Whats the area of a 9 inch diameter?
If you mean a circle area than A = 63.61725 inch². Area A = pi times diameter² / 4.
How many times greater is the area of a 6 inch circle to that of a 2 inch circle?
Radius is 3 times as large so area is 3*3 = 9 times as large.
How many square feet are in a 14 feet 9 inch circle?
A circle with a diameter of 14 feet 9 inches has an area of: 170.87 square feet.
What is the circumference of 9 inch diameter circle?
The circumference of 9 inch diameter circle is about 28.27 inches.
How calculate area circle?
The formula for finding the area of a circle is pi * r², where pi = 3.14; * = multiply; r = 1/2 of the diameter; and ² = squared (multiplied by itself). An example of how to calculate the area of a circle with a 6 inch diameter (3 inch radius): a = Pi * r² a = 3.14 * 3² a = 3.14 * 9 a = 28.26
How do you find the area of a shaded area that is 12 in base and 9 inch height?
just multiply the two numbers
How many square inches in a 18 inch Dia. circle?
The formula for the area of a circle is A = PI R squared.Pi is about 3.1416R is the radius, half the diameter or 18/2 = 9A= 3.1416 * 9 * 9 = 254.4696 Using more digits in PI will give slightly different answers such as3.14159265359 * 9 * 9 = 254.469004941 which still is about the same value.So the area of an an 8 inch diameter circle (rounded) is about 254.5 square inches
What Is the area of a circle with a 6 inch diameter?
A=pi X radius squared 3.14 X 9=28.26 sq. inches
