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3.9cm. The Radius is always half the diameter of a circle.

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Q: What is the radius of a 7.8cm circle?
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What is the area of a circle with radius of 6 cm?

The area of a circle is calculated with the formula πr2, where r is the radius. Therefore, the area of a circle with radius 6cm would be π(6)2 = (36)π, or approximately 113.097 square centimeters.


What is half of a diameter of a circle called?

The radius of the circle.


Wha is the radius of a circle?

The radius of a circle is half the circle's diameter


What is the radius of a circle where d is the diameter of the circle?

the radius of a circle is r


What is the radius of the circle equal to?

Radius of a circle= Perimeter of the circle/2*pi Radius is half the diameter Radius is the length of a straight line from the center point of the circle to the edge of the circle.


If the radius of a circle is r what is the diameter of the circle?

The radius of a circle is half the diameter so if the radius of a circle is r, then the diameter is 2r.


How do the the radius and diameter of a circle compare?

The diameter of a circle is twice its radius


Which is the best defeniton of the radius and and of a circle?

The radius of a circle is halve the circle's diameter.


What is the distance from the centre of a circle to any point on the circle?

It is the radius of the circle.


What is the equation for the radius of a circle?

The radius of a circle = the diameter of the circle divided by 2


Is the radius of a circle half of a diameter?

no.the radius of a circle is the distance from the middle of the circle to the edges. no.the radius of a circle is the distance from the middle of the circle to the edges.


Which term describe the distance from the center of a circle to any point on the circle?

The distance from the center of a circle to any point on the circle is called the radius of the circle. The radius is a line segment that starts at the center of the circle and ends at any point on the circle. It is always a straight line and is always perpendicular to the circumference of the circle. The radius is half the diameter of the circle, which is the distance across the circle through the center. The diameter of a circle is always twice the length of the radius. My recommendation ʜᴛᴛᴘꜱ://ᴡᴡᴡ.ᴅɪɢɪꜱᴛᴏʀᴇ24.ᴄᴏᴍ/ʀᴇᴅɪʀ/372576/ꜱᴀɪᴋɪʀᴀɴ21ᴍ/