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What is the circumference of the circle with and area of 121 pi yd2and keep your answer in pi?
Wiki User
∙ 13y ago
The radius a circle with area of π*121 yd2 is 11 yds [= sqrt(121)]
The circumference, therefore, is 2*11*Ï€ = 22*Ï€ yards.
Wiki User
∙ 13y ago
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What is the area of a circle using 3.14 or PI with a circumference of 18.84m?
A circle's area can be found using the equation π*r^2 (radius squared) and the circumference of a circle is 2πr. In order to find the area, then, we need to find the radius first: We will use 3.14 as the value of pi to keep the math a little more simple. 2πr=18.84 (given from the initial question) πr=9.42 r=3 Then, we plug that back into the area equation: π(r^2)= π(3^2)= π*9=28.26
What is pie in circle?
In mathematics, pi (π) is a mathematical constant that represents the ratio of a circle's circumference to its diameter. It is an irrational number, meaning it cannot be expressed as a finite decimal or a fraction. The value of pi is approximately 3.14159.
How would you find an oval with the same area of a circle?
An oval is a general word that could have different shapes. If you squash a circle evenly, the new shape in math is called an ellipse, which has an oval shape. The formula for the area of a circle is Pi times the Radius of the circle squared. The radius is half the height of the circle and also half the width of the circle. The general formula for the area of an ellipse is Pi times half the height times half the width. So we say length A is half the height of an ellipse and length B is half the width of an ellipse. When A is equal to B you have a circle. When they are different you have an ellipse. So if you want the area of the circle to be the same as the area of the ellipse, then you have to keep the height times the width the same for the ellipse as it was for the circle. As you squash the ellipse further the width must stretch out more than the height gets pushed down. For example, a circle with radius of 1 inch would have the same area as an ellipse with height ½ inch and width 2 inches because 1 times 1 is equal to ½ times 2. Another ellipse with the same area could have height ¼ inch and width 4 inches.
Units for area of a circle?
The unit can be anything...just make sure to label exactly what the question specifies. It could be centimeters, inches, etc. Also keep in mind for area it is the unit squared. So, for example, if the area was 40 cm, you would put 40 cm2 as your answer.
What is the formula for measuring the cylinder volume of unequal circles?
It's a frustum! to find the area of this figure you need to take the area of the entire cone and subtract the area of the mini cone. Let me explain.If you keep extending thesideofthe figure into the direction of the smaller circle, it creates a cone, right? so take volume (1/3 area of base * height) of the entire extended cone (whose base is the bigger circle to the vertex). Then take the volume of the top cone(whose base is the small circle to the vertex). Subtract the small one from the big one, and it gives you the area of the frustum.
What is the area of a circle using 3.14 or PI with a circumference of 18.84m?
A circle's area can be found using the equation π*r^2 (radius squared) and the circumference of a circle is 2πr. In order to find the area, then, we need to find the radius first: We will use 3.14 as the value of pi to keep the math a little more simple. 2πr=18.84 (given from the initial question) πr=9.42 r=3 Then, we plug that back into the area equation: π(r^2)= π(3^2)= π*9=28.26
Why is not possible to draw a circle with a circumference of 100cm?
It is possible. Just keep the drawing instrument 15.915 cm from a set point (the circle's center).
What is circumference of a circle with a diameter of 65 cm?
Assuming you are talking about a circle, you simply multiply the diameter by pi. Keep the result (in this case) as 65pi to have it exact, or use an approximation of pi such as 3.1416, and do the multiplication, if you want an actual number.
What is the area of 12 foot circle?
Assuming that the Diameter is 12 foot the radius would be 6 foot. So Area of a circle is found by Pi*r² So: 3.14 * 6² = 113.04ft² In conclusion: The area of a 12 foot circle would be 113.04ft² - To keep with significant figures the answer would be: 113ft²
What is pie in circle?
In mathematics, pi (π) is a mathematical constant that represents the ratio of a circle's circumference to its diameter. It is an irrational number, meaning it cannot be expressed as a finite decimal or a fraction. The value of pi is approximately 3.14159.
Write a c plus plus program to find the area of circle?
#include<stdio.h> void main() { int r; int pi=3.14; float cir,area; printf("/n enter the radius of the circle"); scanf("%d",&r); cir=2*pi*r; area=pi*r*r; printf("the circumference of the circle is%d",cir); printf('the area of the circle is %d",area); }
How do you draw a tangent to a circle from a point on its circumference?
Short instructions:Construct the diameter of the circle at the tangent point Construct a line at right angles to the diameter at the tangent point. this is a tangent to the circle at that point.Detailed instructions with compass and straight edge:Given: circle C with a point T on the circumference Sought: Tangent to C at TFind the center circle CPlace the needle of the compass on the (circumference of) circle C (anywhere), draw a circle [circle 1] (I think circle 1 has to be smaller than twice the diameter of circle C).Without changing the compass size, place the needle of the compass on the intersection of circles C and circle 1, draw a circle (circle 2)Without changing the compass size, place the needle of the compass on the other intersection of circles C and circle 1, draw a circle (circle 3)Connect the intersections of circle 1 and circle 2 (one is outside and one inside circle A) this we call [ line 1]Connect the intersections of circle 2 and circle 3 (also here one is outside and one inside C) [line 2]The intersection of line 1 and Line 2 is [O]. This is the center of circle CDraw a line [line 3] from [O] through [T] and beyondConstruct the diameter of the circle at [T] (the point for the tangent) and extend it beyond the circumference of circle C With your compass needle at [T] mark off equal distances on [line 3] inside and outside circle C. We call these points [4] & [5]Increase the compass size somewhat and with the needle at [4] draw a circle [circle 4]Without changing the compass draw [circle 5] centered on [5]Construct a line perpendicular to line 3 at [T]The line through the intersections of circle 4 and circle 5 is the sought tangent at [T]Note: although the instructions say "draw a circle" often it is sufficient to just mark a short arc of the circle at the appropriate place. This will keep the drawing cleaner and easier to interpret.
How would you find an oval with the same area of a circle?
An oval is a general word that could have different shapes. If you squash a circle evenly, the new shape in math is called an ellipse, which has an oval shape. The formula for the area of a circle is Pi times the Radius of the circle squared. The radius is half the height of the circle and also half the width of the circle. The general formula for the area of an ellipse is Pi times half the height times half the width. So we say length A is half the height of an ellipse and length B is half the width of an ellipse. When A is equal to B you have a circle. When they are different you have an ellipse. So if you want the area of the circle to be the same as the area of the ellipse, then you have to keep the height times the width the same for the ellipse as it was for the circle. As you squash the ellipse further the width must stretch out more than the height gets pushed down. For example, a circle with radius of 1 inch would have the same area as an ellipse with height ½ inch and width 2 inches because 1 times 1 is equal to ½ times 2. Another ellipse with the same area could have height ¼ inch and width 4 inches.
You see a white marker with an Orange circle and black lettering. What does this marker tell you?
This is a non-lateral marker. It can indicate a controlled area, such as no wake. It can be an informational marker, a "keep out" marker, or a warning marker (Dam, Rock, etc)
What to do when you have a decimals in a circumference sum?
You have to round it or just keep it the way it is. Another way to do it would be to
What is the area of a circle with a radius of 7 in?
The equation to find the area of a circle is pi x r2, let us just keep pi as pi, if the radius is 7, 72 is 49, so in terms of pi, the answer would be 49 pi, then one would just multiply 49 to whatever digit of pi you wanted to. answer is 153.86 :)
How do you draw an equalateral triangle around a circle with a compass and straight edge?
Keep compass the same size. Draw circle one. Draw circle two with the center on the edge of circle one. Draw circle three centered on one of the points of intersection between circle one and two. Now the area in between the all three circles where the points of circles intersect should join to make an equalateral triangle. Connect with your straight edge.
