The area of a circle is the total number of square units found in the space inside the circle.You could count all of the squares inside the circle, but it much easier and accurate to use the formulas for finding the area of a circle.

In the formula for area and circumference of a circle, radius plays an important role which you will learn later. Diameter The diameter of the circle is the line which divides the circle into two equal parts. Jul 26, 2019 · If you don’t know the radius, however, you can still calculate the area if you are given the length of the circle’s circumference, or perimeter. You can use a two-step process, solving first for the radius using the formula for the circumference: circumference = 2 π ( r ) {\displaystyle {\text{circumference}}=2\pi (r)} .

The formula for calculating the area of a circle is pi multiplied by square of radius. Radius is actually half of the diameter. In this video, the diameter is given as 10.6 meters. Hence, the radius will be half of 10.6 which is equal to 5.3 meters. What is the standard form equaton of a circle? Answer: is a way to express the definition of a circle on the coordinate plane. The formula is $$(x -h)^2 + (y - k)^2 =r^2 $$. h and k are the x and y coordinates of the center of the circle $$(x-9)^2 + (y-6)^2 =100 $$ is a circle centered at (9, 6) with a radius of 10 If JavaScript is not working on your browser, or in case you are simply curious, here is the procedure for calculating the diameter of a circle from its area. For an example, we have an area of 303,000 square meters.

The circle is a plane geometry figure with no end points or sides. It holds the same length from the center point to any outer point of the circle. The formula for diameter of a circle using area is useful in determining the circle dimension when only the area is given as input. For example, a circle having a radius of 4 inches has a diameter equal to 8 inches. Given a circumference of 10 inches, the diameter of the circle is approximately 3.18 inches. A circle with an area of 15 square inches has a diameter approximately equal to 4.37 inches. Feb 20, 2012 · Use 3.14 for pi to calculate the area of a circle when its diameter is given. Take a quiz at this link: http://www.mrmaisonet.com/index.php?/... to see if you have ... Jul 26, 2019 · If you don’t know the radius, however, you can still calculate the area if you are given the length of the circle’s circumference, or perimeter. You can use a two-step process, solving first for the radius using the formula for the circumference: circumference = 2 π ( r ) {\displaystyle {\text{circumference}}=2\pi (r)} . Apr 30, 2018 · For any circle, if you divide the circumference by the diameter you get pi, an irregular number usually rounded to 3.14. Setting Up the Formula Write down the formula for calculating the circumference of a circle; C = πd, where C = circumference, π = 3.14 and d = diameter.