48 works out as a circumference of 24.5597207 units
75 works out as a circumference of 30.69980124 units
So the ratio is about 4:5
If you mean ratio then I don't quite understand the question.. but if you mean RADIUS Then you take the diameter and divide it by two. ============================================== There's no such thing as the ratio of circles. You can find the ratio of their diameters, the ratio of their radiussesses, and the ratio of their areas. -- The ratio of their diameters is: One diameter divided by the other one. -- The ratio of their radiusses is the same number as the ratio of their diameters. -- The ratio of their areas is the square of that same number.
Multiply each of the diameters by pi (pi = 3.14159265 or 3.14 for rough approximation) to find the circumferences of the circles.
easy, just divide 2*pi*r by pi*r-squared. You get 2/r .
You calculate the areas of two shapes and then divide one area by the other to find the ratio of their areas.
Difference in areas = A1 - A2 where A1 and A2 are the areas of the larger and smaller circles. Other expressions will depend on what information about the circles is available: radius, diameter, circumference.
First you times 3.14 by the diameter and there you go
7:3
In order to find the ratio of two areas, you times it by the number of a number to get the number of the numbers numbers number, and that number divide by the first number which is 6 and then do the square root of the numbers number to get that number, which you will times by 2.
There are two kinds of ratios. One is the ratio of a circle, which is half the circle's diameter, (which is the length of the circle across), which can be used to find the circles area. (the ratio squared multiplied by pi). The other ratio is something that looks like this 1:2 which work similar to fractions. Such as, for every one ____ there are two ___.
Since the scale factor of the moon to the earth is 1:4, then the ratio of their areas will be the scale factor squared or 1:16. The ratio of their volumes will be the scale factor cubed or 1:64.
A cylinder with two circles may be a right cylinder or a truncated cylinder. Both of their surface areas can be computed as the product of the circumference of the circle and the cylinder's height. This is based on the assumption that both circles are of equal diameters and parallel each other.
In order to find the area of a circle, the important thing is to the find the radius first. Given that the circumference of a circle is 2πr (where r=radius), then Circle 1: 2πr=25π or r=25/2 Circle 2: 2πr=75π or r=75/2 The area of a circle is πr2. Therefore, Area of Circle 1: π(25/2)2=625π/4 Area of Circle 2: π(75/2)2=5625π/4