We apply the formula for the area of a circle to determine the radius of the circle:
Area is equal to π * radius^2.
Now that we know the area is 2826 square centimeters and that π is roughly 3.14, we can rewrite the formula to find the radius:
3.14 * radius^2 = 2826
Dividing 3.14 across both sides:
radius^2 = 3.14 / 2826
radius^2 is around 900.63.
To find the radius, take the square root of both sides:
radius ≈ √900.63
radius approximately 30.04 centimeters
you take the radius and multiply it by itself. then you multiply the radius squared by 3.14 to get the area of a circle...
Since the area of a circle is pi times radius squared, take the radius and square it. Then, multiply that by 3.14, or pi to get the area of the circle.
you take the radius, square it, then multiply it by 3.14 and there is the area
Yes. To get the area, you take the radius, square it, and multiply that by Pi, so it is the only variable and does affect the circle's area.
the area of a circle = pi times the (radius)squared
Area = pi * radius^2. radius = diameter / 2, so radius of this circle is 3.Area = 9 * pi (take your favorite value of pi: 3.1416....)
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
-- Take the formula for the area of the circle in terms of the radius . . . A = (pi) R2-- Solve that formula for 'R'. You'll then have a formula for the radius in terms of the area,which is exactly what you're looking for.
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
Since the area of a circle is (Pi)times(Radius squared) then you would reverse the process to find the radius, and hence, the diameter. Divide the area by Pi (3.14159...) and you would have the radius squared. Take the square root of that and you have the radius. To get the diameter, multiply the radius by 2.
The area of a circle is A=πr2, so the radius is r = √(A/π). Divide the area by pi and then take the square root.
Divide the circumference by pi, and that will give you the diameter. Then take half of the diameter (the radius), and plug it into the formula for the area of a circle (A=πr²)