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If there are two circles and the small one has diameter of 20 what is the radius of the big circle?
Wiki User
∙ 13y ago
You need some more information about any of the circles, or about the relationship between the two circles, to answer this question.
Wiki User
∙ 13y ago
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How do you find the area common to circles?
pi r squared Area of the circle = pi (radius)2 square units.If we are supposed to find the area between two concentric circles then, let us see the definition first.Concentric circles have a common center and different radii.Area of the large circle – Area of the small circle = Area of the region between the circles.It is called as the annulus part Source: www.icoachmath.com
Can a circle be made of straight lines?
No. A circle has no straight lines. You can approximate circles with very small straight lines (that's how a computer draws circles) but mathematically, no.
What is difference between curvature and radius of curvature?
Curvature is a general term to describe a graph. Like, concave or convex. Radius of curvature is more exact. If the curve in a 'small' section is allow to continue with the same curvature it would form a circle. that PRETEND circle would have an exact radius. That is the radius of curvature.
Why does pi multiplied by diameter equal the circumference of a circle?
Well, I asked my math teacher and thi is what she said. Okay. A long time ago there were math mathematicians. They had circles sculpted out of rock and wood and stuff like that. So anyway, these mathematicians, or MAs would study the circles by mesuring them. The MA's would take a tape and measure all the way around a circle. They then would measure across the circle. The would do big circles and small circles. They then noticed that there was a pattern. If the mutiplied the distance across the circle times a number, they would get the circumferance. The number was, 22/7 or 3.14...and pi was born. So of course we know that the decimal isn't perfect and we won't get an exact answer when mutipling by pi. But now at least we don't have to cut a circle out of stone and use a measuring tape to determine it that way. ~Minicooper Out!
Is the center of a great circle also the center of a small circle?
No. Every circle on the sphere whose center is also the center of the sphere is a great circle. If the circle's center is not also the center of the sphere, then the circle is a small circle.
What is the Radius of a small circle?
radius of any circle = diameter/2
Will a circle with a radius of 4 inches fit inside a circle with a diameter of 5 inches?
no because the radius is half the diameter so it must be multiplied by two in order to find the diameter of that circle which is 4 times 4 equals to 8 so the circle which has a diameter of 5 inches is much to small for a circle with a radius of 4 inches to fit.
What is the approximate meausre of an circle?
Circles come in different sizes. You can have them as small or as large as you want.The circumference of a circle is equal to the diameter, multiplied by pi. That's the same as 2 x radius x pi.The area of a circle is equal to pi x radius2.
How do you draw and label the diameter and radius on a circle?
The diameter is a straight line from one side of the circle to the other which passes through the centre of the circle. The radius is a straight line from the centre to the boundary of the circle. To label them, you could either write the words alongside the lines or, if the circle is too small, draw arrows from the two lines to outside the circle and write the words at the end of the arrow.
The diameter is 12 and the circumference is 37.68 for the large circle for the small circle the diameter is 6 wat is the circumference?
For the small circle of diameter 6, the circumference is 18.84.
How do you find a circumference?
Circumference of a circle is pi * diameter. Diameter is 2 * radius. So if you know the radius, circumference is 2 * pi * radius. Now choose an appropriate approximation for pi (3.14, or 3.1416, or even the fraction 22/7), depending on your application. This will work for ANY circle, no matter how big or small it is, as long as it's a true circle and not a different elliptical shape, e.g. an oval.
The diameter is 12 and the circumference is 37.68 for the large circle for the small circle the diameter is 6 what is the circumference?
The circumference of the small circle would be 18.84.
What is the diameter of a small skippy lid?
It is twice its radius
How do you put 7 small circles in 3 big ones so that each big circle as 4 small circles?
Draw three circles that touch in a shape of a circle. Draw two small circles in each big one and another in the intersection. It is supposed to be a Venn Diagram.
How do you find the area common to circles?
pi r squared Area of the circle = pi (radius)2 square units.If we are supposed to find the area between two concentric circles then, let us see the definition first.Concentric circles have a common center and different radii.Area of the large circle – Area of the small circle = Area of the region between the circles.It is called as the annulus part Source: www.icoachmath.com
What does pi the formula in math stands for?
In certain formulas, including most that involve circles, you will see 'pi'. This pi always has the same value, approximately 3.14159... However, this number is irrational, which means it never terminates (ends) or repeats. But what exactly is pi? Pi is the ratio between any circle's circumference and its diameter. This ratio is always the same, no matter how big or small the circle is, but the degree of precision might vary depending on how big the circle is. Why is Pi useful? Pi allows us to calculate the diameter or area of any circle, but also has many other uses. In order to use these formulas, though, we need to define the terms we are using. Circumference - the distance around the circle Diameter - the length of a straight line segment that passes through the center of the circle Radius - the distance from the center of the circle to the circle itself To calculate the circumference, multiply the diameter by pi (3.14...) To calculate the area, square the radius, then multiply this by pi (3.14...) In symbols: Circumference = diameter x pi Area = (radius)2 x pi Hope this helped.
Draw 15 small circles circle 3 fifth of them?
9
