That means a radius of 5. Using the standard circular area formula (Pi * r ^ 2), the resulting area is exactly 25 * Pi. Using a numerical estimate for Pi, the area is about 78.5398.
By using the formula: area of circle = pi*radius2
Assuming that 3.14 is pi, then most likely you're looking for the surface area of a circle, which is pi x r2.
The formula for the area of a circle is pi * radius squared. The circumference of a circle's formula is pi * diameter. NOTE: pi equals approx. 3.14
The area of a circle (A) is pi x r x r.The circumference of a circle (C) is pi x d, or pi x 2r.So if you know C, you can calculate r using the formula C = pi x 2r or r = C/2piOnce you know r, you can calculate A using the formula A = pi x r x r
For a circle, area = Pi x radius2
area of a circle is equal to pi times the square of its radius.. A=(pi)r^2
Using 3.14 as Pi the area of circle is: 530.66
That means a radius of 5. Using the standard circular area formula (Pi * r ^ 2), the resulting area is exactly 25 * Pi. Using a numerical estimate for Pi, the area is about 78.5398.
Surface area of a sphere = 4*pi*radius2
By using the formula: area of circle = pi*radius2
To find the area, the formula is: pi*r2.Plug in the information: pi*(4)2.Solve: pi*16
The area of a circle can be calculated using the formula pi*(radius^2). So in this case, the area of the circle will be pi*(1^2), which is equal to pi.
Well, first you need to know the formula for what you are doing (usually with pi it is area or circumference).
Circumference: C = 2 x pi x r Area: A = pi x r2 Where: pi = about 3.1416, r is the radius (half the diameter).
The area of a plate will likely be found using the formula for the area of a circle. This is the product of pi*(r^2).
The area of a circle with a known radius can calculated using the following formula where r is the radius : A = Pi(r)2