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	Two cones formed from two circular sectors		2018-11-30
		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.
	Why 1/2 in the area of a circular sector?		2018-10-26
		Ariel pose la question : In the equation for area of a sector=1/2r^2theta why is it 1/2? Please explain conceptually not algebraically. Penny Nom lui répond.
	Form a cone from a circle sector		2018-08-12
		Tinashe pose la question : A 216 sector of a circle of radius 5cm is bent to form a cone. Find the radius of the base of the cone and its vertical angle. Penny Nom lui répond.
	The perimeter of a sector of a circle		2017-08-11
		Alisa pose la question : find the perimeter of the sector with radius 7 cm in which the angle at the centre is 60 degrees leave your answer in terms of pi Penny Nom lui répond.
	A sector of a circle		2016-04-21
		mustafa pose la question : In a sector of a circle, the arc length is equal to half the perimeter of a sector.find the area of a sector in terms of r Penny Nom lui répond.
	Cutting a round cake so that it doesn't dry out		2014-08-26
		James pose la question : I'm wondering if there's a simple way to calculate the area between two parallel chords of a circle equidistant from its diameter, or if I have the area, to find the distance between the two chords. Here's my "problem". You may have heard of the way of cutting a round cake so that it doesn't dry out - make two parallel cuts (chords) the length of the cake, take the middle piece, then push the two pieces together. So I know the area of a 12" cake, and I want say, exactly an eighth of the cake. How wide do I cut the centre piece? Now to get even more difficult, the next day I want another eighth from the centre. How wide do I cut the next pieces, and so on...? Thanks, James Harley Weston lui répond.
	A circle is divided into three sectors		2014-04-17
		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.
	A triangular island		2012-12-29
		Udit pose la question : A long time ago Mr Gibson found an island shaped as a triangle with three straight shores of length 3 km,4 km and 5 km. He declared an 'exclusion zone' around his island and forbade anyone to come within 1 km of his shore. What was the area of his exclusion zone? Penny Nom lui répond.
	Two sectors of a circle		2012-02-03
		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.
	A sector of a circle		2011-01-07
		Alice pose la question : the radius of a circle is 7cm the angle of the sector is 68 how do you find the Penny Nom lui répond.
	A sector of a circle		2010-11-29
		Mel pose la question : Find the area of a sector of a circle that has a central angle of 13pi/18 and a radius of 12cm. Round answer to nearest 10th degree Penny Nom lui répond.
	The area of a field of view		2010-04-07
		Frank pose la question : I know we have a field of view of 90 degrees and the distance we can cover is 6 miles. What is the area we can cover/view? A formula would be nice to have since the diameter or distance of the wedge area can change and the degree of the field of view can also change. Thank you and I look forward to hearing from you. Frank Penny Nom lui répond.
	Water in a culvert		2010-03-18
		Chip pose la question : Hello, I have a problem to which I know there must be an analytical solution - but as it has been 50 years since I studied math I can't remember quite how to do it!! I have a 12" round culvert in my yard that runs water all year. I would like to be able to calculate the flow through the culvert by measuring the depth of water flowing through and measuring the speed of the current. I can measure the depth and the speed, but I forget how to calculate the cross section of the flow. If you could help I would greatly appreciate it. Thank you Penny Nom lui répond.
	A sector of a circle		2010-02-04
		trisha pose la question : Given a circle with a radius of 6 inches. Find the area of the sector that is formed by an arc of 36 degrees. Round your answer to the nearest tenth of an inch. Penny Nom lui répond.
	The area of a sector		2010-01-07
		angelkem pose la question : how do you get the area of the circle, the sector, the shaded sector, non shaded sector and its total area if the diameter is 20 cm and each area of the circle is 45 degrees? Penny Nom lui répond.
	Annular sector		2009-07-20
		Ed pose la question : What is the name for the section of a flat ring (annulus)? Similar to a section on a radar screen, a quadrilateral but the top and bottom are curved. Robert Dawson lui répond.
	The area of an arched transom		2008-09-28
		Ivan pose la question : What is the formula for figuring out the square footage of arched transom windows & doors? Harley Weston lui répond.
	An exclusion zone around a triangle		2008-09-07
		Awrongo pose la question : A long time ago Mr Gibson found an island shaped as a triangle with three straight shores of length 3 km,4 km and 5 km. He declared an 'exclusion zone' around his island and forbade anyone to come within 1 km of his shore. What was the area of his exclusion zone? Stephen La Rocque and Penny Nom lui répond.
	Arc-length and sector-angle		2008-08-06
		Benson pose la question : If chord length, radius are given, How to find the sector angle and arc-length Janice Cotcher lui répond.
	The area of a sector of a circle		2008-05-10
		lupio pose la question : a problem asks for the area of a sector in a circle,no central angle,in circle is given only 5cm radius, three answers 180-90-35 can't find a way to start.Help Harley Weston lui répond.
	The maximum area of a pizza slice		2008-04-12
		charles pose la question : A slice of pizza in the form of a sector of a circle has a perimeter of 24 inches. what value for the radius of the pizza makes the slice largest[when o is the central angle in radians, the area of the sector is given by A= r^20/2and the length on the circle is given by s=r0 Harley Weston lui répond.
	The perimeter of a sector of a circle		2008-02-28
		erica pose la question : What is the perimeter of a sector if the radius is 18 and the middle arc is 150? Penny Nom lui répond.
	A sector of a circle		2008-01-17
		Amandsa pose la question : What is the formula for finding the sector of a circle? Penny Nom lui répond.
	A large concrete shape		2008-01-16
		Keith pose la question : what is the cubic yards of an area that is not a perfect 1/4 circle? The dimensions are 100ft. x 60ft. x 125ft. curcumferal arch x 3ft. depth? Stephen La Rocque lui répond.
	The area of a sector of a circle		2008-01-11
		Serenity pose la question : A denotes the area of a sector of a circle of radius r formed by the central angle theta. Find the area A if r=10 meters and theta = 1/2 radians. Penny Nom lui répond.
	A portion of a circle		2007-12-07
		Richard pose la question : please could you tell me the formula and answer to the following. I have a circle portion with a radius of 150mm and an angle of 120 deg. If an arc is drawn from one point to the other as the radii touch the circle circumference, i need to know the area of the segment and the formula to carry out the answer. Many Thanks Penny Nom lui répond.
	Proving a quadrilateral is a rhombus		2007-12-03
		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 2-column proof method? Stephen La Rocque lui répond.
	Sides and vertices		2007-11-17
		derek pose la question : What is the correct name for a 2D geometric shape that would look like one slice from a round pizza and how may sides and vertices would it have? I believe you would say it has one vertex and two sides with the curved boundary not resulting in vertices or a side. Your help is much appreciated. Chris Fisher and Walter Whitelty lui répond.
	The perimeter of a circle sector		2007-10-25
		sara pose la question : Hi! The area of a sector of a circle is 25 sqcm. The radius of the sector is 6 cm. Calculate the perimeter of the sector. Many thanks!!! Penny Nom lui répond.
	Equation of a circle circumscribing a triangle with given vertices		2007-10-01
		Randy pose la question : How do I determine the equation of a circle when it is circumscribed by a triangle whose vertices are (-1, 6), (3, -2), and (2, 5)? Stephen La Rocque lui répond.
	A sector of a circle		2007-09-26
		A student pose la question : hi im stuck on this question. i have tried to do some, could you please che= ck it and help me.the answers i have worked out are in red. the question is= attached. thank you. Penny Nom lui répond.
	The area of part of a circle		2007-06-21
		Sarah pose la question : Hi, I need help finding the area of a part of a circle that involves a chord. I need this answer/help very soon if at all possible. I have attached a drawing of what I am trying to solve. Thank you for your help! Sarah! Penny Nom lui répond.
	Water tank volume		2007-05-29
		Cecelia pose la question : I HAVE A SEMI CIRCULAR TANK AGAINST A WALL MEASURING 6'10" ACROSS THE WIDEST PART AND 3' FROM THE WALL TO THE FRONT OF THE TANK. THE DEPTH IS 14". PLEASE HELP ME TO CALCULATE THE VOLUME OF WATER IN THE TANK. Stephen La Rocque lui répond.
	Cutting the top off a circle		2007-02-25
		Daniel pose la question : If a circle as a diameter of D I cut off a straight part at C from the top What is the formula to find the area of the left over part? Penny Nom lui répond.
	Sectors of a circle		2006-11-30
		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.
	The area of a sector and a triangle		2006-06-23
		Howard pose la question : I thought of the following problem which is similar but much simpler than the tethered goat problem: What is the angle(it is more illustrative in degrees)of arc of a unit circle so that the area between the chord it subtends and the arc length is equal to the area of the triangle with opposite side the subtended chord. Stephen La Rocque and Penny Nom lui répond.
	Overlapping area of two circles		2006-04-15
		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.
	The square footage of an area in my backyard		2006-03-17
		Kim pose la question : I need to find out how to calculate the square footage of an area in my backyard that is in the shape of a "slice of pie". There are two sides that are straight lines that come together at the top to form a point, and then at the bottom is a curved line that joins the two other lines together. I need to figure out how to calculate the square footage that is inside the area. Penny Nom lui répond.
	Sectors and arcs		2006-01-25
		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.
	The area of a sector of a circle		2006-01-02
		Natashia pose la question : How do you find the area of a shaded sector of a circle? Penny Nom lui répond.
	A 3-dimensional pie shape		2005-09-17
		Bill pose la question : Your site appeared in my search for the name of a 3-dimensional pie shape. 2-d would be a sector of a circle. As it it curved, I don't believe it is in a the polyhedra family. Can you help me find the mathematical term for it? Chris Fisher lui répond.
	Two overlapping circles		2005-03-20
		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		2004-12-23
		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.
	The railing around a pool		2004-07-26
		Bob pose la question : I have a 15' circular above ground pool. Around the perimeter of the pool are eleven (11) sections of railing. Each rail has 5 slots at each end for pins. I have calculated that the length of the arc under the railing to be 51.4". what I am trying to determine is the distance between the end points of the arc so that I can figure out which slot to use in the rails without going round and round the pool moving and removing the rails until they finally fit. Been there, done that, no fun. Penny Nom lui répond.
	Collinear Points		2003-01-13
		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 9-12 high school class in geometry. My name is Gary Thanks for your help. Gary Harley Weston and Chris Fisher lui répond.
	Applied geometry		2001-11-02
		Jenny pose la question : Where can I find some hands-on 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.
	Overlapping a circle and a square		2000-10-28
		Jacky pose la question : A square with a dimension 20 by 20cm. and a quarter of the circle with the radius of 25cm (A quater of a circle is created by 2 cuts that are perpendicular bisectors of each other where the intersecting point is at the centre of the circle). With these 2 pieces, the 2 pieces are placed over each other in which the 90o angle of the quarter circle matches with one of the right angles on the square. Now, calculate the overlapping area of the 2 figures. Chris Fisher and Harley Weston lui répond.
	Volume of oil in a tank		1999-04-17
		Lars Waldemarsson pose la question : My problem is to get an equation for the depth of the oil in a gastank formed like a cylinder. The cylinder is in a horizontal position and by a stick you will be able to get the depth of the oil in the tank. All I need is an exmaple which I can build on. By this equation you will be able to get the volume of the oil if you know the depth. Harley Weston lui répond.
	Dig digs in the garden		1999-02-11
		Katherine Shaw pose la question : A circular garden has an a radius of 8m. Dig, the dog, is tied up to a fence that runs round the outside of the garden. Dig was able to dig up all the garden, apart from an area of 64 square metres, which he couldn't reach. How long was his lead? Chris Fisher and Harley Weston lui répond.
	Concurrent Lines in a Triangle		1998-08-10
		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		1997-03-02
		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.
	Some Circle Questions.		1997-02-25
		Staci Vawser pose la question : A circle with a radius of 10m is drawn. A chord is drawn across the circle. How is the area that is formed between the chord and the arc calculated? Harley Weston lui répond.
	Common Area of two sectors.		1996-11-06
		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.

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