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well you can divide the circumference by pi (3.14) and it will always give you the diameter or you could measure it.
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∙ 12y ago
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How do you find the radius of a circle if you don't have the area?
If you do not have the area, what do you have? The radius is half the diamiter The radius is PieR2 Worked backwards if you know the circumfrence.
How do you find the area of a circle if you know the diamiter?
okay so, this week this is what I was doing in math. first, the formula is PiR2 [pies are squared] is what my teacher said. Divide the diameter by 2, to get the radius. multiply the radius by itself, then multiply it by 3.14.
How do you work out the area of a circle?
Area of a circle = pi*radius2 measured out in square unitsfor pi use this number 3.14159and remember the radius of a circle = half the diameter.----------------------------------------------------------------Thus a circle with a 10 inch diameter would have an area of:Radius = diamiter/2, which is 10/2= 53.14159 * (5*5) = 78.53975 square inches
How do you find the angle of a triangle within a circle segment?
You can find the angle of a triangle within a circle segment using the circle theorems.
How do you find the area of a shaded circle and the area of an unshaded circle on that is inside the other circle?
To find the area of the circle pi*radius*squared and subtract the area of the figure inside
How do you find the circumference if a circle if you have the diamiter?
Multiply the diameter by 3.14 (pi).
How do you find the radius a circle if you have the diamiter?
Divide the diameter by 2. (The radius is 1/2 of the diameter.)
What has a diamiter of 10?
A circle with a radius of 5.
How do you get diamiter?
The diameter of a circle is twice its radius.
What is the diamiter of a circle with a radius of 8cm?
16 cm
What is the area of a circle with a diamiter of 3cm?
Using 3.14 as Pi the area of circle is: 0
How do you find the radius of a circle if you don't have the area?
If you do not have the area, what do you have? The radius is half the diamiter The radius is PieR2 Worked backwards if you know the circumfrence.
If the diamiter is 5.5 what is the circumference?
Circumference of circle: 5.5 times pi
Is a radious half the diamiter of a circle?
yes the radius is half the diameter. It goes from the edge of the circle to the centre.
If you double the radius of a circle will the circumference also double?
since the equation to get circumference is diamiter X pi, and the diamiter is 2x the radius, yes it would double the C of the circle ie before radius is 2, so diamiter is 4 4 X Pi 12.57... radius is 4 so the diamiter is 8 8 X pi = 25.13... that would double it.
How do you find the radius and diamiter of a circle if the area is givin?
Since: area = pi * radius2 Then: Radius = square root ( area / pi ) And: Diameter = radius * 2
What is the equation for the diamiter of a circle?
Diameter = 1/2 of the circle's radius. Diameter = 2 times the square root of (the circle's area/pi) Diameter = the circle's circumference/pi
