If you want to ask questions about the "following", then I suggest that you make sure that there is something that is following.
Radius = Diameter/2 Diameter = 2* Radius
If the radius is 42 meters, then you already know the radius.
divide diameter by 2
Area of any circle is: pi*radius*radius or pi*r^2
The expression "Pi r squared" refers to the formula for calculating the area of a circle, where "r" represents the radius of the circle. The area is given by the formula A = πr², where π (pi) is approximately 3.14159. To find the area, you square the radius and then multiply by pi. For example, if the radius is 2, the area would be π(2²) = 4π, or about 12.57 square units.
Radius = Diameter/2 Diameter = 2* Radius
area = radius * radius * Math.pi;
Calculating the radius of a semicircle depends on what information about the semicircle is given.
The formula for calculating the area of a circle in terms of the radius is A r2, where A represents the area and r is the radius of the circle, expressed in square units.
The equation for calculating the area of a circle is A r2, where A represents the area and r is the radius of the circle.
If the radius is 42 meters, then you already know the radius.
divide diameter by 2
To derive the cross sectional area of a two liter bottle do the following formula. Area = (radius * 2.54 cm/in)^2 * pi = X cm^2.
Ï€*r2, where r is the radius of the circle.
Area = pi*[R2 - r2] where R is the outer radius and r the inner radius.
Area of any circle is: pi*radius*radius or pi*r^2
The formula for calculating the area of a circle is A r2, where A represents the area and r represents the radius of the circle.