Algebraically, it is ; -
A = pi r^(2)
In words, it is ' Area equals 'pi' multiplied to the radius squared'.
NB 'pi' is a constant at 3.141592..... usually shortened to '3.14'.
The radius (r) is the distance from the circle centre to the circumference/edge.
'radius squared' is r^(2) , that is 'r' multiplied to 'r' ; r X r = r^(2) .
NNB The circumference of a circle is ;
C = 2 pi r
Note the power/exponent of '2' becomes a coefficient.
In words ' Circumference equals two multiplied to 'pi' multiplied to the radius. (NOT radius squared).
Formula for area: A = Pi*R² (Pi = 3,1416 and R² is the radius multiplied by itself) Formula for circumference: C + Pi*D (D is diameter) Formula for Diameter: D = 2*R (radius multiplied by 2))
Area of a circle = pi*radius2
706.5 cm
In order to convert the area of a circle to the circumference of the circle, divide by the radius and multiply by two. The formula for the circumference of a circle is pi times the diameter.
semi means half A semi-circle is half a circle The formula for the area of a circle is A = (Π * r^2) Area of semi circle = (Π * r^2) ÷ 2
The area of a sector is the area of the circle multiplied by the fraction of the circle covered by that sector. This is a true statement and correct formula.
r2(square)
pi multiplied by the radius squared
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.
The radius squared. The radius is half of the diameter
First of all, there's no such thing as the "area of a circumference". The distancearound the circle is called the "circumference", and the area of the circle is calledthe "area of the circle".-- When the diameter of the circle is doubled, the circumference is doubledand the area is multiplied by 4.-- When the diameter of the circle is tripled, the circumference is tripledand the area is multiplied by 9.-- When the diameter of the circle is multiplied by N, the circumference ismultiplied by N and the area is multiplied by N2 .
Formula for area: A = Pi*R² (Pi = 3,1416 and R² is the radius multiplied by itself) Formula for circumference: C + Pi*D (D is diameter) Formula for Diameter: D = 2*R (radius multiplied by 2))
the area can not be cubed. the area is always squared. volume is cubed. the formula for area is pie multiplied by radius squared. your formula for your circle is... A = 121pi in2 the radius in your circle is 11 inches the formula for circumference is two times pi times the radius C = 2 * (3.14159) * 11 your answer is 69.11498in
The formula for the area of a cone is one-third multiplied by the base multiplied by the hight.
true
The formula to find the area of a circle is: A = pi * r2
the formula for the area of a circle is 3.14 x radius squared