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Use the formula area = pi x radius2. If you replace everything you know, you can solve for the radius.

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14y ago

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How do you find the radius of a circle if you only know the area?

Radius = +sqrt(Area/pi)


How do you find the area of a circle by only knowing the radius?

Since the area of a circle is pi times radius squared, take the radius and square it. Then, multiply that by 3.14, or pi to get the area of the circle.


What is the required piece of information tho find the area of a circle?

The only piece of information required to find the area of a circle is the radius of the circle. Once you know the radius of the circle, the area is simply the radius squared multiplied by pi (approximately 3.14).


How do you find the area of a circle if you only know its circumference?

Divide its circumference by 2*pi which will give the radius of the circle. Area of the circle then is pi*radius squared


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

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


Find diameter when you only have area of a circle?

pi*radius2 = area of a circle radius2 = area/pi radius = square root of (area/pi) diameter = 2*radius


What is the area of a circle with a radius of 3 in by 4 in?

A circle has only one measure for its radius. A shape that has a "radius" of 3 in by 4 in cannot be a circle.


How do you work out the area of a circle with only the diameter?

By dividing the diameter by 2 will give the circle's radius. Area of any circle = pi*radius squared.


What is the radius of a circle when the area is 96?

Well, darling, to find the radius of a circle when the area is 96, you first need to remember that the formula for the area of a circle is πr^2. So, plug in the area of 96 and solve for the radius. The radius would be 4√(π), or approximately 6.93 units. Voilà!


How do you find a area with the diameter of a circle?

Area = Pi(radius)squared. You only need the radius of a circle to find the area. To find the radius, when you have the diameter, divide the diameter by 2, because the diameter forms two radii. After you have found the radius, plug in the radius into the area equation: Area = Pi(radius)squared In other words, you can say the other equation for the area of a circle is: Area = Pi(1/2Diameter)squared


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

If you know the radius (say it's 4), square the radius and multiply that number by pi. So for a radius of four, it would be 4 X 4 = 16 X 3.14 = 50.24, the area of the circle.


What is the area of a circle if you are only given the radius?

you take the radius, square it, then multiply it by 3.14 and there is the area