The formula for the area of a circle is πr^2, where π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle. So, "pi r squared" refers to the area of a circle, calculated by multiplying π by the square of the radius. This formula is fundamental in geometry and mathematics for finding the area enclosed by a circle.
2[4(radius)/3(pi)]
The radius of a circle is always half of the diameter. Therefore, if the diameter of a circle is 36 units, the radius would be half of 36, which is 18 units. The formula for finding the radius from the diameter is radius = diameter / 2. So, in this case, the radius would be 18 units.
The formula for finding the area of a circle is : pi(r) squared. So, that answer would be 13.69cm multiplied by pi, which is nearest to 3.14.
If you are given the radius of the circle, you can use the formula: diameter = 2*radius If you are given the circumference of the circle, you can use the formula: diameter = circumference/pi
Area of circle = pi*(radius)2
The formula for the circumference of a circle is pi * diameter or (2 radius.)
2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi
The area of a circle with a known radius can calculated using the following formula where r is the radius : A = Pi(r)2
Hell are you talking about?!? A radius is a dimension of a circle! A rectangle has no stinking radius!
Area of a circle = pi*radius squared
Area of a circle = pi*radius2
this is called finding the circumference. The formula is 2*pie*radius
The formula for the area of a circle is πr^2, where π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle. So, "pi r squared" refers to the area of a circle, calculated by multiplying π by the square of the radius. This formula is fundamental in geometry and mathematics for finding the area enclosed by a circle.
Pi * R squared, where R is the radius of the circle in question
It is the formula for finding the circumference of a circle which is the same as 2*pi*radius
2[4(radius)/3(pi)]