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Radius is half the diameter.

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14y ago
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Q: What is radius if diameter is 2.25?
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A circle has a radius of 15 Find the diameter and the area?

diameter = 30 units area = 225*pi square units


What is the diameter of a circle with 225 pi cm?

The given measure, 225*pi cm is a linear measure so it cannot refer to the area. It could refer to the radius or the circumference of the circles, or the length of an arc or a segment of the circle. It could, of course refer to something else, but then the task of finding the diameter is near impossible. If it is the length of an arc or a segment, you require further information. Since that is not provided, perhaps one can assume that the measure does not refer to either. That leaves the radius or the circumference. If the radius is 225*pi then the diameter is simply 2*radius = 450*pi cm. If the circumference is 225*pi, then the diameter is circumference/pi = 225 cm.


How find area of a circle if diameter is 15?

pi * 225/4 Radius is 15/2 pi r2 = pi * (15/2)2 = pi * 225/4


Calculating radius and diameter?

Radius = Diameter/2 Diameter = 2* Radius


How do you get the diameter from the radius?

to get the diameter from the radius you simply multiply the radius by 2 since the radius is half the diameter. d=2r where d = diameter and r = radius


What is the Diameter to a radius of a circle?

A radius is one half of a diameter so divide by two to get from a diameter to a radius. Or you can multiply the radius by 2 to get to the diameter.


The length of a radius is the length of a diameter?

The length of a radius is not the length of a diameter. The diameter is two times the length of the radius.


How do you get the radius when you have the diameter?

radius = diameter/2


What is radius if diameter is 8?

The radius is half the diameter. So, if the diameter is 8, then the radius is 4.


Diameter of circle..its radius?

A radius is half of a diameter. Example Diameter:4 Radius:2


What is the relation between radius and diameter?

The diameter of a circle is twice its radius.


What is the diameter of a circle if the radius is 27 cm?

When you have the radius of a circle and you are trying to find the diameter, multiply the radius by two; the answer is the diameter. If you have the diameter and want to find the radius, divide the diameter by two; the answer will be the radius. The diameter is 54 centimeters.