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The area of any circle is (pi) x (radius)2 .

The area of half the circle is just half of that number.

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12y ago

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What is the area of a circle if the diameter is 4 meters?

Using 3.14 as Pi the area of circle is: 12.56


What is the area of a circle with a diameter of 20 meters?

Oh, dude, you're hitting me with the math questions! Okay, so the area of a circle is π times the radius squared. Since the diameter is 20 meters, the radius is half of that, so 10 meters. Plug that into the formula, and you get an area of 100π square meters. So, like, grab a tape measure and start marking out that circle, or just trust me on the math, whatever floats your boat.


If the diameter of a circle is 10 meters what is the area in square meters?

The formula for the area of a circle is A = pi x r2 where r is the radius. If the diameter of the circle is 10 meters, then the radius is half that amount or 5 meters. Plug that value into the formula for r, using 3.14 as an approximation for pi. The area is 3.14 x 52 or about 78.5.


If the diameter of a circle is 1.3x10 meters then what is the radius?

Half of that.


What is the radius of a 6 meter circle?

Well, isn't that just a happy little question! To find the radius of a circle, you simply divide the diameter by 2. Since the diameter of your circle is 6 meters, the radius would be half of that, which is 3 meters. Just imagine that radius as a little friend, bringing balance and harmony to your circle painting.


What is the radius of 67.5 meters?

If a circle has a diameter of 67.5 m, then the radius is half of that. Half of 57.5 is 28.75


Does the area of a circle treble if the diameter trebles?

No. The area of a circle is 3.142 x radius x radius (radius is half the diameter).


What is the area of a circle with a diameter of 8 meters use 3.14 for?

The radius of the circle is half of the diameter, so it is 4 meters. To find the area of the circle, we can use the formula A = πr^2. Substituting the value of the radius, the area of the circle is therefore A = 3.14 * (4)^2 = 3.14 * 16 = 50.24 square meters.


How many square meters in a circle 4.2 meters in diameter?

16 square meters, to 2 significant digits. The area of a circle is calculated as the value pi (3.1416...) times the square of the radius of that circle. In this case, where a circle has a diameter of 4.2 meters, the radius, which is half the diameter, will be 2.1 meters. So to solve for the area (A) of this circle: A = pi x r2 = 3.1416 x 2.1m x 2.1m = 15.954456m2 = 16 square meters.


What is the area to a half circle that is 22 feet in diameter?

area of a circle is pi times radius squared. the radius is 11 feet. the area ofthe circle would be 380ft2 since it is a half circle you take half of 380... your answer is 190ft2


How many square meters in a circle 55 meters in diameter?

The area of a circle is calculated as the value pi(3.1416...) times the square of the radius of that circle.In this case, where a circle has a diameter of 55 meters, the radius, which is half the diameter, will be 25 meters.So to solve for the area (A) of this circle:A = pi x r2 = 3.1416 x 25m x 25m = 1963.5m2 = 1963.5 square meters.


What is the area of a semi circle with a radius of 3 inches?

It's half of the area of the whole circle...