







Two cones formed from two circular sectors 
20181130 

APARNA pose la question : The central angles of two sector of a circle are 60° and 120° . Using these sectors two cones are made. If the radius of the smaller cone is 5 cm, find the radius and base area of the larger cone. Penny Nom lui répond. 





A circle is divided into three sectors 
20140417 

atolagbe pose la question : the area of a circle is 154cm square. it is divided into three sectors such that two of the sectors are equal in size and the third sector is three times the size of the other two put together. calculate the perimeter of the third sector. take pi=22/7? Penny Nom lui répond. 





Two sectors of a circle 
20120203 

Wayne pose la question : I am not even sure what to ask. I have to two lengths of feet and an angle of degrees, and I have to find the area?
**Problem attached
Thanks,
Wayne Penny Nom lui répond. 





Proving a quadrilateral is a rhombus 
20071203 

Jeanie pose la question : How do you prove that a quadrilateral is a rhombus because the diagonals
of the quadrilateral are perpendicular and bisect each other using the 2column
proof method? Stephen La Rocque lui répond. 





Sectors of a circle 
20061130 

Maithreyi pose la question : A circle of diameter 21m is divided into three sectors with central angles 60degree,120degree and 180degree. Find the area of each sector? Stephen La Rocque lui répond. 





Overlapping area of two circles 
20060415 

Jade pose la question : Given two identical circles where the radius (6 units) is the distance between the centers, what is the area of the overlapping region?
Stephen La Rocque lui répond. 





Sectors and arcs 
20060125 

Wael pose la question : How is the area of an arc (alpha*pi*r squared/360) derived?
How is the length of an arc (alpha*pi*r/180) derived? Penny Nom lui répond. 





Two overlapping circles 
20050320 

Safi pose la question : I have a problem to calculate the area of two overlapping circles because two circles are overlap then how i calculate the overlap area to subtract from the area of both circle. Penny Nom lui répond. 





Irrigation and a sector of a circle 
20041223 

Chuck pose la question : A friend of mine is a farmer and uses Pivots to irrigate portions of his land. The crop rows are in straight lines that all form chords of a large circle. The intent is to determine area between any two "boundary" rows expressed in acres. Harley Weston lui répond. 





Collinear Points 
20030113 

Gary pose la question :
Which of the 4 points are collinear when you construct the following concurrent lines or rays of a triangle?  P(1), the point where the angle bisectors intersect.
 P(2), the point where the altitudes (or extensions) intersect (inside or outside of the triangle).
 P(3), the point where the medians intersect.
 P(4), the point where the perpendicular bisectors (or extensions) of the three sides of a triangle intersect.
This is for my 912 high school class in geometry. My name is Gary Thanks for your help. Gary
Harley Weston and Chris Fisher lui répond. 





Applied geometry 
20011102 

Jenny pose la question : Where can I find some handson activities for my Applied Geometry classes? I want to do more activities with them that allow us to get out of the classroom. However, I want to use activities that use only inexpensive equipment because I usually buy the equipment myself. Walter Whiteley lui répond. 





Concurrent Lines in a Triangle 
19980810 

Chris Woolf pose la question : The question is Name four types of concurrent lines, rays, or segments that are associated with triangles. Chris Fisher lui répond. 





Area Between Two Sectors 
19970302 

Rebecca Henry pose la question : Points A,B,C,D,E,F are equally spaced on a unit circle. Arc CGE has a center A. Find the number of square units of area in the shaded region. Walter Whiteley lui répond. 





Common Area of two sectors. 
19961106 

Lynda Mow pose la question : How do I find the area common to two intersecting circles of radii 8 ft and 10 ft if their common chord is 10 ft long? Penny Nom lui répond. 

