# Questions on Geometry: Circles and their properties answered by real tutors!

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 Geometry: Circles and their properties Solvers Lessons Answers archive Quiz In Depth

 Question 109696: find the equation of the axis of symmetry of the parabola f(x)=3x^2+24x+47 Click here to see answer by stanbon(57967)

 Question 112226: Circle J has a radius of 6 in. Radii JK and JL form an angle that is not a straight angle. The length of KL is not 6in. Classify JKL according to its sides.Make a diagram if possible. Thanks a whole lot! Click here to see answer by scott8148(6628)

 Question 112403: Find the area, use pie = 3.14, and the radius of the circle is 2.05 ft? Click here to see answer by uma(370)

 Question 112452: If the circumference of a circle is 3 meters than what is the diamiter and what is the radius? Click here to see answer by SHUgrad05(58)

 Question 113209: Homework questions: The area of a circle is found by the equation A=pie*r^2. If the area A of a certain circle is 81pie square centimeters, find its radius r. I need to know how to figure this to be able to get the answer. Click here to see answer by Earlsdon(6294)
 Question 113209: Homework questions: The area of a circle is found by the equation A=pie*r^2. If the area A of a certain circle is 81pie square centimeters, find its radius r. I need to know how to figure this to be able to get the answer. Click here to see answer by solver91311(17077)

 Question 113212: Homework question: A circular pool measures 14 feet across. One cubic yard of concrete is to be used to create a circular border of uniform width around the pool. If the border is to have a dept of 1 inch, how wide will the border be? Use 3.14 to approximate pie. Express your solution rounded to two decimal places. (1 cubic yard=27cubic feet)I would like to see how this is worked out, not just get an answer. Thank you! Click here to see answer by solver91311(17077)

 Question 115059: Fing the circumference and area of each cirlce. Round to the nearest tenth 1.) The radius is 4cm 2.) The radius is 6cm. Thanks so much Click here to see answer by checkley71(8403)

 Question 115809: Find the volume of 5" x 10" x 50" = Click here to see answer by checkley71(8403)

 Question 115807: Find the circumference of a circular swimming ppol with a 6 foot radius (use pie = 3.14) Click here to see answer by checkley71(8403)

 Question 115808: Find the length of a rectangle of 131.2 square centimeters if the widthe is 8 centimeters. Click here to see answer by josmiceli(9817)
 Question 115808: Find the length of a rectangle of 131.2 square centimeters if the widthe is 8 centimeters. Click here to see answer by checkley71(8403)

 Question 117909: I need to find the general form of the equation of a circle. The problem in the book is "find center at the point (-3,1) and tangent to the y-axis. Im taking a correspondence course and am having difficulty with the tangent part of the problem. Cheers! Click here to see answer by Earlsdon(6294)

 Question 118237: What would be the radius of a circle with a diameter of 8 inches? Click here to see answer by bucky(2189)

 Question 119103: If the radius of a circle is 8 in. then what is the circumference? Click here to see answer by MathLover1(6812)

 Question 120263: Can some one show me how to find a circumference of a circle? Can some one show me how to find a area of a circle? One of my question says find the circumference of a circle that has a radius of 4 cm? The second question says find the area of a circle that has a radius of 4 cm? Thanks so much for all the help!!!! Click here to see answer by stanbon(57967)

 Question 120570: How can I find the radius of a circle if the area is 50 square inches? Click here to see answer by tutor_paul(490)

 Question 122054: I managed to do 7,8 :D just now, something clicked :D But, question 9, IMPOSSIBLE :P im so awful haha! :D Find the equation of the circles passing through these sets of points. a ( 5,0), (3,4) and ( -5,0) b. (6,3), (-5,2) and (7,2) c. (2,0), (3,1) and (-6,10) if some one could help me with those three, id actually be so amazingly happy :D ill forget the rest :P this is just like the hardest thing ive done :D :( please help :D Click here to see answer by solver91311(17077)

 Question 122053: Hey :D i attemped this geometry based homework 2 weeks ago, i managed to do questions 1,2,3,4,5,6, which i found challenging as circles arent my strong point :D i tried for twice to do questions 7,8,9. With no luck, it has driven me actually crazy, ive tried so hard, and when i got it back earlier today he said, try again. So i would really appreciate if someone could help me on these 3 questions, i have a headache from them now, i just wanna know how to do them :( 7. Find the equation of the circle whose centre is (3, -5) and which passes through the point (6, -7). ( i thought i was really getting somewhere with this question, i think just a small thing i must have done wrong somewhere). 8. The points (10, -4) and (2,2) are the ends of a diameter of a circle, find the equation of the circle? I went along the lines of finding the radius by halving... etc, again, something i think only small occured wrong. 9. ( this i cant do at all) they give 3 points on a circle and must find the equation from only 3 points in a circle. I have NO idea in the world how to do this, please help :D a circle passes through the points (6,3), (-5,2) and (7,2) , find the equation of the circle. Thank you SO much for anyhelp, im sorry for asking so much, but ive tried 2 days, tried really hard to understand it, read textbooks and internet pages :( Im sorry but i really need help thanks you SO much! Click here to see answer by scott8148(6628)

 Question 123338: Ace Carpentry needs to cut an arch for the top of an entranceway. The arch needs to be 8 ft. wide and 2 ft. high. To draw the arch, the carpenters will use a stretched string with chalk attached at an end as a compass. In the picture the top of the arch is point (0,2). The sides of the arch are (4,0) and (-4,0). A) Using coordinate system, locate the center of the circle. I tried to do the midpoint formula but couldn't figure the center using that and not with the distance, unless I am doing it all wrong. B)What radius should the carpenters use to draw the arch? Click here to see answer by solver91311(17077)

 Question 123224: The area of a circle is {(9y^2 + 78y + 169)pi} square centimeters. What is the diameter of the circle (make sure answer is labeled correctly? Click here to see answer by Fombitz(13828)

 Question 124049: I need help with truth tables. See question below. The symbol -> is an arrow for if...then. Construct a truth table for (~q^p)->~q Click here to see answer by stanbon(57967)
 Question 124049: I need help with truth tables. See question below. The symbol -> is an arrow for if...then. Construct a truth table for (~q^p)->~q Click here to see answer by chitra(359)

 Question 124455: Here is another truth table. My answers are below. Please let me know if they are correct. Thanks. Construct a truth table for ~(p v q) p q ~p ~q ~(pvq) T T F F T T F F T F F T T F T F F T T F Click here to see answer by rapaljer(4667)

 Question 124468: What is the area of a circle with diameter 34mm? Click here to see answer by iluvbuilding429(41)

 Question 124499: A square of side length 10cm is inscribed in a circle. Calculate the diameter of the circle Click here to see answer by bucky(2189)

 Question 124461: Determine the truth value of the following statement: Rembrandt was a famous painter and some odd number are prime. Click here to see answer by Edwin McCravy(8999)

 Question 124460: Determine the truth value of the statement ~q <-> [ ~ r ^ (p v q)] when p is false, q is true, and r is true. Click here to see answer by Edwin McCravy(8999)

 Question 125172: This problem is from a practice exam: A circle has its center somewhere along the line y=3. It passes through the points (8,11) and (-4,-5). Find its equation. -I think the first step is for me to find the radius. Because I know the equation of a circle is . But I don't really know how to find the radius when I don't know the exact center. Click here to see answer by stanbon(57967)

 Question 125251: what is the area of a circle with diameter of 34mm Click here to see answer by Fombitz(13828)

 Question 125275: I need some help with my homework. A drinking glass is in the shape of a cylinder that is 60mm in diameter and 15cm tall. How many cubic centimeters of water will it hold? Click here to see answer by mathobsess(2)

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