# 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 311388: Find the radius of a circle in which an inscribed square has a side of 8 inches. Click here to see answer by solver91311(16897)

 Question 311446: I need an answer from Student Solutions Manual, 2nd Edition (ISBN-10: 0-13-187971-5) for College Geometry, 2nd Edition by Musser, Trimpe and Maurer (ISBN-10: 0-13-187969-3) Section 7.1, Question #50 Can you help? Click here to see answer by rfer(12662)

 Question 311536: give the equation for the circle if its center is at (-1, -6) andi it contains the point (2, -1) Click here to see answer by Earlsdon(6287)

 Question 311543: The distance fronm Kansas City Indianapolis is 500 mi. A car was driven using tires with a radius of 14 in. How many revolutions of each tire occurued on the trip? Click here to see answer by checkley77(12569)

 Question 312031: A circle has an area of 25 pi and is divided into 8 congruent regions. What is the perimeter of one of these regions? a) 10 - 25pi b) 10 + 5/8pi c) 10 + 5/4pi d) 10 + 5pi e) 10 + 25pi If possible can you please explain how you came up with the answer? Click here to see answer by Fombitz(13828)

 Question 312419: A circul dinner plate hase a radius of 13 cm. Calculate thearea of th plate? Click here to see answer by mananth(12270)

 Question 312444: A sq of side 5x is inscribed in a circle. Express the area of a circle as a function of x. Click here to see answer by Fombitz(13828)

 Question 312463: how to find the diameter of a circle Click here to see answer by JBarnum(2044)

 Question 312861: find x. two circles not touching, with a tangent seperating them, the tangent is seperated into 2 equal parts by the circle. two secants going through the seperate circles. Top secant exterior is x-1. bottom secant exterior is 2x. both interior parts are 6. Click here to see answer by Fombitz(13828)

 Question 313332: Inside a semi circular tunnel of diameter of 22 feet, a vertical support beam is placed 5 feet from the side of the tunnel. How tall is the beam? Click here to see answer by mananth(12270)

 Question 313359: IN circle O, OA and OB are radii and the measure of angle BOA eqals 120. Tangents PA and PB have length 10. find OA Click here to see answer by Fombitz(13828)

 Question 313482: a circumfrencw 24 pie cm.What is its area in terms of pie? Click here to see answer by JBarnum(2044)

 Question 313643: Find the area of a circle with radius 3 units. Give your answer in terms of and as a decimal rounded to the nearest tenth. Use 3.14 for the approximation of . Click here to see answer by checkley77(12569)

 Question 313740: A park maintenance person stands 16m from a circular monument. If you assume her lines of sight form tangents to the monument and make an angle of 34*, what is the measure of the arc of the monument that her lines of sight intersect? Click here to see answer by Alan3354(30993)

 Question 314082: What is the radius if: degree of measurement of arc=30 length=1/3xy(pi) My answer was 8xy. degree of measurement of arc=40 length=8/9(t)(pi) My answer was 9t. degree of measurement of arc=18 length=6(y)pi My answer was 45y. These are the questions I missed, along with my answers. I would be grateful if someone could explain what I did wrong and work out the problem, so that I may understand why I missed these questions. Cheers! Click here to see answer by Theo(3464)

 Question 314242: Will a 15" by 16" rectangle fit inside a 22.5" circle? I want to order a rectangular pizza stone to fit on a 22.5"diameter grill and I'm afraid it won't fit. Click here to see answer by nerdybill(6962)
 Question 314242: Will a 15" by 16" rectangle fit inside a 22.5" circle? I want to order a rectangular pizza stone to fit on a 22.5"diameter grill and I'm afraid it won't fit. Click here to see answer by Fombitz(13828)

 Question 314962: what is the circumference of a circle with the area of 4069.44? Click here to see answer by solver91311(16897)

 Question 314968: an circle is centered at the point (-3,2) and has a radius of length 7. what is the equation Click here to see answer by nerdybill(6962)

 Question 314924: find the circunference and area of a circle with the radius 3.5 feet. use 22/7 for 3.14 Click here to see answer by checkley77(12569)

 Question 314888: I have a pizza. The radius is 10 inches long. The pizza was cut into 16 equal slices. When 1 slice was left, my sister and I both wanted it, so we agreed to cut it in half, but I like the crust more than she does, so we decided to cut it the "other way." In other words, the two pieces would not be symmetrical. The inside piece would contain all topping, and the outer piece would contain some topping and some crust. 1. Find the area of the whole pizza. a=(pi)(10^2), =314 2. What is the area of one piece of pizza? (pi)(r^2)/16, 100(pi)/16=19.6 3. What is the area of a half-piece? 100(pi)/36=10 4. What would the area of the whole pizza be if it were made of half pieces? a=10(pi), a=100/10, a=10 5. What is the radius of a half-piece? (ie, where do I need to cut to make two equal halves out of a piece?) I was wondering if I got these answers correct. If I did not, could someone please explain what I did wrong?Also, I was a little confused as to how to get the answer to the last question. Cheers! Click here to see answer by checkley77(12569)

 Question 314922: find the circunference and area of a circle with the radius 7 meters. use 22/7 for 3.14 Click here to see answer by Fombitz(13828)

 Question 315355: The centers of two circles with radii of 3 and 5 are 17 units apart. Find the length of the common internal tangent. Answer either in exact form or rounded to the nearest tenth. please help final tomorrow!!!! Click here to see answer by Edwin McCravy(8909)

 Question 316196: Your pizza arrives and you notice it has been cut into 8 congruent pieces. What is the measure of the central angle for each piece? Click here to see answer by rfer(12662)

 Question 316480: A circle of radius 12 inches has its radius decreased by 8 inches. By what percentage has its area been decreased? Click here to see answer by Fombitz(13828)

 Question 316499: How to get the center of the three cirlces in a venn diagram? How to calculate the center point of the three cirlces if all of them are intersencting Click here to see answer by Fombitz(13828)

 Question 316655: the cirlce with a radius 14 is inscribed in a square. how would you compare the area of the square to the area of the circle? Use pi=22/7 Click here to see answer by Fombitz(13828)
 Question 316655: the cirlce with a radius 14 is inscribed in a square. how would you compare the area of the square to the area of the circle? Use pi=22/7 Click here to see answer by JBarnum(2044)
 Question 316655: the cirlce with a radius 14 is inscribed in a square. how would you compare the area of the square to the area of the circle? Use pi=22/7 Click here to see answer by stanbon(57361)

 Question 317940: A concrete worker is pouring the footer for a rectangular house that is 60 ft long and 40 ft wide. The trench dug around the outside edge of the house is 18 inches wide and 30 inches deep. Find the area of the footer? Please Help me get started! Click here to see answer by checkley77(12569)

 Question 318452: A circle has a radius of 8 inches. Find the area of a sector of the circle if the sector has an arc that measures 45°. Click here to see answer by mananth(12270)
 Question 318452: A circle has a radius of 8 inches. Find the area of a sector of the circle if the sector has an arc that measures 45°. Click here to see answer by gsmani_iyer(180)

 Question 318758: I have a pizza. The radius is 10 inches long. The pizza was cut into 16 equal slices. When 1 slice was left, my sister and I both wanted it, so we agreed to cut it in half, but I like the crust more than she does, so we decided to cut it the "other way." In other words, the two pieces would not be symmetrical. The inside piece would contain all topping, and the outer piece would contain some topping and some crust. 1. Find the area of the whole pizza. a=(pi)(10^2), =314 2. What is the area of one piece of pizza? (pi)(r^2)/16, 100(pi)/16=19.6 3. What is the area of a half-piece? 100(pi)/36=10 4. What would the area of the whole pizza be if it were made of half pieces? a=10(pi), a=100/10, a=10 5. What is the radius of a half-piece? (ie, where do I need to cut to make two equal halves out of a piece?) x=7.158 6. How far up the radius from the center of the circle will I need to cut so we will both have an equal area of pizza? And Jenny and Greg have both agreed to mow half of a lawn. This lawn is a rectangle, 25 feet by 45 feet. Their lawn mower cuts a 2 feet wide path. If Jenn starts at a corner and makes a path around the outside, how many times should she go around to cut one half of the lawn? 2 My answers were incorrect. Could someone please explain how to get the correct answers? Cheers! Click here to see answer by Fombitz(13828)

 Question 318833: "If the arc on a particular circle has a length of 12 units, and the circumference of the circle is 36, which is the degree measure of the arc?" Click here to see answer by Fombitz(13828)