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A=pi x radius squared

Example: circle with a radius of 2 would be worked out like this: 2 squared (4) x 3.14.

Answer= 12.56

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Q: How do you find the area of a circle given the radius?
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Related questions

How do you find the radius of an inscribed circle of a square given the area of the circle?

If yo have the area of the circle, the square is irrelevant. Radius = sqrt(Area/pi)


How do you find a area a circle?

The answer depends on what information you are given.


How do you find the area of a circle when the radius is unknown?

By using the other information supplied about the circle to calculate either its radius (from which its area can be calculated) or its area (if the circle is similar to another with a given area and some ratio between the two circle is given):If the diameter is given: radius = diameter ÷ 2If the circumference is given: radius = circumference ÷ 2πIf the circle is similar to another circle which has a given area, and the length ratio is given; square the length ratio to get the area ratio and apply to the given area.


How do you find radius when area is given?

Divide the area by pi and then square root it this will give the radius of the circle.


How do you find the radius of a circle when given only the area?

Area = pi*radius2 So, radius = sqrt(area/pi)


How do you find the radius of an inscribed circle of a square given the area of the square?

Half the square root of the square radius equals the circle radius.


How do you find the radius of a circle when your given the area?

a=area p=pi r=radius sqr(a/p)=r


How do you find the area of a circle without knowing the radius?

If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.


What is the formula to find the area of a circle with the radius given?

A = pi x radius squared where pi = 3.14


What is the formula to find a area of a circle when given radius?

A = pi x radius2


Find the area and perimeter of a given circle?

If 'R' is the radius of the circle, then-- area of the circle is [ pi R2]-- perimeter of the circle is [ 2 pi R ]


If the area of a circle is 201.06 then the circumference of the circle is?

The formula to find the circumference of a circle is C = 2πr, where r is the radius of the circle. To find the circumference, you first need to find the radius by using the formula for the area of a circle (A = πr^2). Given that the area is 201.06, you can solve for the radius. Once you have the radius, you can plug it into the formula C = 2πr to find the circumference.