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What do you call a circle with a dot in the middle in radius and diameter?
Wiki User
∙ 10y ago
The distance from a circle to its center (the dot in the middle) is called 'the radius'.
The distance from a circle to a point opposite is called 'the diameter'.
The diameter is twice the length of the radius.
Wiki User
∙ 10y ago
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What is the radius of a 38 inch circle?
It is customary to call a circle a 38 inch circle if its diameter is 38 inches. If that is the case, the radius = diameter/2 = 19 inches.
What do you call the distance from the center of the circle to the edge?
radius
How do you use pi to find a circle's dimensions?
Pi is defined as the ratio of the circumference of a circle to the diameter of the circle.Therefore, if you measure the diameter of the circle (call it 'D') then the circumference of the circle is pi times D.To find the area of the circle use the formula Area = pi* D2 /4 .Going one step further, to a sphere, if you measure the radius of the sphere (call it R, where R is half the diameter D), then:1) The surface area of the sphere is Area = 4 * pi * R2 .2) The volume of the sphere is Volume = (4/3) * pi * R3 .
What do you call a line from the center of a circle its circuference?
Diameter deary x
What do you call the shape that's half circle?
Semi-circle. (2D) Hemi-sphere (3D)
What do you call half of a diameter in a circle?
The half of a diameter of a circle is known as a radius.
What is the radius of a 38 inch circle?
It is customary to call a circle a 38 inch circle if its diameter is 38 inches. If that is the case, the radius = diameter/2 = 19 inches.
What is the distance across the middle of a circle call?
It's the diameter.
If the radius of a circle is 8 inches what is the perimeter?
diameter x pie = circumference remember to call it circumference idk about your teachers but mine are picky answer: 50.26 (rounded)
What do you call the longest cord in a circle?
The diameter
What do you call the distance around the outside of a circle?
The distance around the outside of a circle is called the Circumference.
What do you call the distance from the center of the circle to the edge?
radius
What do you call a line that cuts a circle in half?
Diameter
How do you find radius if you know the chord?
well,first the radius is half of the chord. Radius is the distance from the circle centre to the chord end. The chord is the line joining the ends of the arc. Draw this line. Call the distance from the arc of the circle at its deepest point to the mid point of the chord "c". If extended, this line will go throught the centre of the circle. Call half the length of the chord "y". Then the properties of circles and chords is that c(d-c)=y2 where d is the circle diameter, so that d = y2/c + c. And then radius is half that.
Find the circumference of a circle that has a diameter of 40 in round to the nearest inch?
Twice pi multiplied by the radius will get you the result. Pi, if you are going to round to the inch, call it 3.14. The radius will be half the diameter...20 inches. Find a calculator and multiply 2 X 3.14 X 20...you can do it. You can also multiply pi times the diameter and get the same result.
What is the line from the center of a circle to the edge?
The line from the center of a circle to the edge is called a radius. The radius can be used in pi and a lot of other things. If you use the radius the wrong way, your answer will be wrong. Most people call it the " line from the center of a circle to the edge of a circle " but it's called the radius.
What do you call chord that passes through the center of a circle?
diameter
