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

Tutors Answer Your Questions about Circles (FREE)

Question 250206: Find the circumference, to the nearest tenth, of a circle with a diameter of 16 cm. Use 3.14 to approximate π

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Question 251196: a circle is centered at the origin and contains the point (3,4). What is the circumference of the circle in terms of pie
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Question 252372: A circular race course has an inner diameter of 318 m and an outer diameter of 324 m. What is the average length of the course to the nearest meter?
Click here to see answer by palanisamy(496)

Question 252560: What is the area of a circle with a diameter that is 20 inches long? Round your answer to the nearest tenth.
Click here to see answer by drk(1908)

Question 252825: In the diagram of circle O, chords and intersect at E. AE = x, EB = x + 1, CE = x-1, and ED = 2x.
what is
AE = , EB = , CE = , and ED = .
Click here to see answer by richwmiller(9143)

Question 252952: kevin designs a sprinkler system for his yard. one rotation of the sprinkler waters a circle with an area of 225π square feet. What is the radius,r,of the circle the rotating sprinkler waters?
Click here to see answer by drk(1908)

Question 252971: A circular flower bed has a circuference of 18.84 feet. The scale used in making a drawing of the bed is 1"=3'. Determine the length in inches of the diameter on the scale drawing. Express your answer to the nearest whole number.
Click here to see answer by Greenfinch(383)

Question 253303: An arch is built so that it is 6 feet wide at the base. Its shape can be represented by a parabola with the equation y = -2x2 + 12x, where y is the height of the arch. The maximum height, y, of the arch is blank feet
Click here to see answer by Earlsdon(6287)

Question 253511: what is the the circumference of a circle with the radius of 4.8 ft?
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Question 253689: If the radius of a circle is one yard, then its diameter is?
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Question 253689: If the radius of a circle is one yard, then its diameter is?
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Question 253870: Please help me with this problem?
If arc AB, arc BC, and arc CD are non-overlapping adjacent arcs, what is an expression for the measure of arc AD?
Click here to see answer by Theo(3464)

Question 254593: Please help!!! I'll try to explain this well enough to understand since I cannot c&p the figure. But if possible... Please explain!!!Thanks so much=)
I need to find the area of a figure shaped like an ice cream cone. The top (semicircle) is 6m. The figure shows an arc in the semicircle (I'm not real sure about the importance of that). And the bottom of the "cone" is 8m.
If you can make sense of this, I would greatly appreciate any help!!!!!
Click here to see answer by drk(1908)

Question 253981: Sammy has a circular pool in his backyard. The diameter of the pool is 15 feet. What is the circumference of the pool?
Click here to see answer by richwmiller(9143)

Question 254908: An equilateral triangle is inscribed in a circle with a radius of 6". Find the area of the segment cut off by one side of the triangle
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Question 254903: a regular hexagon with sides of 3"is inscribed in a circle find the segment formed by a side of the hexagon and the circle
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Question 254903: a regular hexagon with sides of 3"is inscribed in a circle find the segment formed by a side of the hexagon and the circle
Click here to see answer by Greenfinch(383)

Question 254903: a regular hexagon with sides of 3"is inscribed in a circle find the segment formed by a side of the hexagon and the circle
Click here to see answer by richwmiller(9143)

Question 255612: what is the circumference of a circle with a radius of 3.5 yards and use 3.14 for pie?
Click here to see answer by stanbon(57377)

Question 255740: Express the length of the perimeter of a circle in terms of the area of the circle. Use A for the area in your answer. Perimeter = ?
Thanks so much for the help!
Click here to see answer by drk(1908)

Question 255757: The endpoints of a diameter of a circle are (-4,7) and (2, -1). What is the equation of the circle in standard form?
Click here to see answer by stanbon(57377)

Question 255822: How do I figure out the area of a square inscribed in a circle?
If a sqare is inscribed in a circle, what is the area of the square if the radius of the circle is 15cm?

Click here to see answer by Greenfinch(383)

Question 256028: Carlos made a pizza for his friends. The circumference of the pizza was 47.1 inches. Carlos cut the pizza into pie-shaped pieces. (Use pi+3.14 for any calculations.)
Q. If Carlos cut the pizza into 10 congruent pieces, what was the measure of the central angle of each piece? Explain how you arrived at that answer.
Click here to see answer by stanbon(57377)

Question 256027: Carlos made a pizza for his friends. The circumference of the pizza was 47.1 inches. Carlos cut the pizza into pie-shaped pieces. (Use pi+3.14 for any calculations.)
Q. If the first cut was made across the middle of the pizza, what was the length called, what was its measurement, and what formula did you use to find the answer?
Click here to see answer by drk(1908)

Question 256580: true or false? In the standard equation for a circle centered at any point, a change in the value of the number that is part of the x-term results in a vertical movement.

Click here to see answer by Alan3354(30993)

Question 256680: how many more square feet does 18.84 then 8 using 3.14 for pie

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Question 256775: wHAT IS THE CENTER OF THE CIRCLE X RAISED TO THE 2ND POWER + Y RAISED TO THE SECOND POWER - 4X + 2Y -11 = 0

Click here to see answer by Theo(3464)

Question 256776: what is the formula in finding the center of the circle?
Click here to see answer by drk(1908)

Question 256776: what is the formula in finding the center of the circle?
Click here to see answer by Alan3354(30993)

Question 257304: a circular pool measure 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 depth of 3 inches, how would will the border be
Click here to see answer by ankor@dixie-net.com(15657)

Question 257639: find the circumference of a circle 3.5 cm,giving your answer correct to two decimal place
Click here to see answer by richwmiller(9143)

Question 257928: pound 2/10 in pence
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Question 258586: The ordered pair (-3,2) lies on a circle with center (0,3). What is the equation of the circle? i dont get how to work this problem out can i please get help?
Click here to see answer by Alan3354(30993)

Question 258990: The area of a right triangle is 6. The sum of the lengths of the two sides adjacent to the right angle of the triangle is 12. What is the length of the hypotenuse of the triangle?
Click here to see answer by ankor@dixie-net.com(15657)

Question 259224: Hi! I am doing a lesson in my Geometry Book on Finding Arc Lengths and Areas of Sectors of Circles. In my book it only gives me the equations on how to do this and it shows me how to put the numbers into the equations, but then it shows me the answer. It does not show me how to get the answer. What do I do inbetween substituting the radius and the arc measure into the equation and stating the answer?
Click here to see answer by Edwin McCravy(8909)

Question 259699: If the diameter of a circle is 4, then what is the area of the circle divided by its circumference?

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Question 259699: If the diameter of a circle is 4, then what is the area of the circle divided by its circumference?

Click here to see answer by richwmiller(9143)

Question 260129: Point C is the center of the circle. What is mAB if Imagine a circle with this point. How would i solve this?
Click here to see answer by Alan3354(30993)

Question 260303: Okay. So how do you find the area of a semi-circle if you already have the perimeter? I am solving a problem where the perimeter is 20 and it wants me to find the area of the semi circle. plz help me out!
Thankss!
Click here to see answer by Alan3354(30993)

Question 260316: Cirlce U passes through points a(6,8), B(16,-4), and C(10,8). FInd the coordinates of the center of the circle. Describe in detail the method you use.
Click here to see answer by Alan3354(30993)

Question 260657: if the diameter is 27m, what is the radius?
Click here to see answer by Theo(3464)

Question 260986: What is the approximate area of a fourth of a circle with a radius of six inches?
Click here to see answer by Greenfinch(383)

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