66 Answered Questions for the topic Circle
select a circle
select a circle . these are in circles...1,2,3,4,5,6 Assume that one circle is selected at random and each circle is equally likely to be selected. Determine the probability of selecting. a... more
Equation of circle given center and tangent line
Write the equation for a circle which has its center at (1, 2) and is tangent to the line -3x+2y= 14 Solve algebraically. I know that the equation of a circle is r2=(x-h)2+(y-k)2. So, at this... more
The base of a solid is the circle x2 + y2 = 9. Cross sections of the solid perpendicular to the x-axis are semi-circles. What is the volume, in cubic units, of the solid? (2 points) 9x/4 18π 9π 72π
equation of the circle
Put the equation of the circle in standard form, identify the center (h,k) radius r of the circle. x2+y2-2x-12y+28=0
How much more pizza do you get in a large pizza that has a diameter of 1 inches than you do in a small pizza that has a diameter of 10 inches?
The teacher gives an hint. You need to find the area of each pizza. I'm not so sure how to do this.
Which of the following is an equation of a circle in the xy-plane with center (-1,3) that passes through the origin?
Choices: A. (x-1)2 + (y+3)2 = √10 B. (x-1)2 + (y+3)2 = 10 C. (x+1)2 + (y-3)2 = √10 D. (x+1)2 + (y-3)2 = 10 Please help. Thank you!
Question about a Circle, help please?
In circle O, CD = 44, OM = 20, ON = 19, CD is perpendicular to OM, EF is perpendicular to ON , (The figure is not drawn to scale.) Show your work. a. Find the radius. If your answer is not an... more
Circle Equation with center and radius
Which of the following is an equation of the circle with the center at (-2,3) and a radius of 5 coordinate units in the standard (x,y) coordinate plane?A) x^2+y^2 +4x-6y=5B) x^2+y^2+4x-6y=12C)... more
Area of a circle
Sometimes Mac takes his labrador with him to work at his autobody shop he hooks aces card to a 60 foot chain mounted on the corner of the shop which is a 40 x 80' rectangular building east enjoys... more
2 x^2+4 x+2 y^2+12 y = 20 is the equation of a circle with and can be written in the general form (x-h)^2 + (y-k)^2 = r^2. Find h, k, and r.
Find an equation of the circle with center at (4,-6) that is tangent to the y-axis in the form of (x-A)^2+(y-B)^2=C where A, B, C are constant. What is A, B & C?
What is the radius of this equation after putting it into general circle form by completing the square? 5x^2+2x+5y^2-9y-3=0
The general format of a circle equation: (x-h)^2+(y-k)^2=r^2
"Tangent AB and secant ACD are drawn to circle O from an external point A, AB = 8, and AC = 4. What is the length of CD?"
Find the length of CD.
GEOMETRY - PROOF
How do I prove that three non-collinear points lie on a circle?
what is the center of a circle with the following equation?
Q4 c1 is the circle x² + y² -4y-20=0 and l is the line 2x-y+5=0
Q4 c1 is the circle x² + y² -4y-20=0 and l is the line 2x-y+5=0 (a) write down the centre and radius lenght of c1(b) Find the perpendicular distance from the centre of c1 to the line l in surd... more