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

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Question 1124882: Write the equation of the circle if the center is on the x-axis and it is passing through (0,0) and (2,4)
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Question 1125549: If a 20 cm chord is 6 cm from a 10 cm chord. Find the radius of the circle.
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Question 1126134: Find the equation of a line tangent to the circle x^2+(y−3)^2=34 at the point (5, 0).
Click here to see answer by Alan3354(69443) About Me 
Question 1126135: Find the equation of a line tangent to the circle (x−1)^2+y^2=26 at the point (2, −5).
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Question 1126135: Find the equation of a line tangent to the circle (x−1)^2+y^2=26 at the point (2, −5).
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Question 1126225: A chord subtends an angle of 100 degrees at the centre of a circle of radius 4.9cm. Find the length of the chord.
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Question 1126699: A cone with a base radius of 8 cm fits inside a sphere of radius 10cm. The apex of the cone is touching the top of the sphere. Find the perpendicular height.
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Question 1126875: Melisa is planning to have the front of her property landscaped. her front yard is rectangular and measures 12 m by 14 m. She plans to put grass over the entire yard, except for a brick circular design in the middle that has a radius of 12 ft. How much will she spend to cover the entire yard if grass sells of $297 per square foot.
Click here to see answer by josgarithmetic(39613) About Me 
Question 1126947: The volume of a sphere with radius r is given
by the formula V =4/3Δ R squared to the third power
Find the volume of a sphere with radius 4 meters. Use 3.14 for the
value of Δ .
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Question 1126986: Find the equation of the circle concentric with the circle
x*2+y*2- 6x+ 2y- 11 = 0 and passing through the centre of the circle
x*2+y*2= 16.
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Question 1127155: A sector of circle has a radius 4cm. It is folded over to form a circular cone. Find the radius
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Question 1127647: Circle O has chords AB and CD which intersect at point E.
Given mEA=3, mDE=4, mCD=5, CE=6. Find m (CAN USE CALCULATOR)
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Question 1128073: fine the equation of the circle passing through the point (2,1),(0,-3),(4,3)
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Question 1128072:
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Question 1128285: Find the equation that is satisfied by the coordinates of the centers of the set of circles that are tangent to the line whose equations are 5x+12y-39=0 and 12x-5y-13=0.
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Question 1128563: What is the measure of the central angle of a circle with radius 30 centimeters that intercepts an 18π centimeters arc?
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Question 1128675: Find the equation of the circle tangent to x+y=3 at (1,2) and through (3,6).
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Question 1128916: The diameter of a circle is 52.79 cm less than the circumference. What is the radius?
Round to 2 decimal places
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Question 1128916: The diameter of a circle is 52.79 cm less than the circumference. What is the radius?
Round to 2 decimal places
Click here to see answer by Boreal(15235) About Me 
Question 1128914:
Two circles have the same center but one circle has a radius 5 cm greater than the other. The area of the inner circle is 228 cm2 less than the outer circle. What is the radius of the smaller circle in centimeters?

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Question 1129332: a. Show that the point Q(6,2) lies on the circle x^2+y^2-4x+2y-20
b. Find the equation of tangent to the circle at point Q
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Question 1129367: A circle touches the x axis at the point P(-3,0) and its center C lies on the line 2x+y+1=0. Find:
(a)coordinates of C
(b)radius of the circle
(c)equation of the circle
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Question 1129367: A circle touches the x axis at the point P(-3,0) and its center C lies on the line 2x+y+1=0. Find:
(a)coordinates of C
(b)radius of the circle
(c)equation of the circle
Click here to see answer by ikleyn(52750) About Me 
Question 1129367: A circle touches the x axis at the point P(-3,0) and its center C lies on the line 2x+y+1=0. Find:
(a)coordinates of C
(b)radius of the circle
(c)equation of the circle
Click here to see answer by Alan3354(69443) About Me 
Question 1129385: Two concentric circles are such that one circle has half the radius of the other. If a point is chosen at random inside the larger circle, then what is the the probability that it lands outside the smaller circle?
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Question 1129411:
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Question 1129588:
Two circles have the same center but one circle has a radius 6 cm greater than the other. The area of the inner circle is 221 cm2 less than the outer circle. What is the radius of the smaller circle in centimeters?
Round to 2 decimal place.
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Question 1129803: A sphere circumscribes a cube of side 4cm.
a) What is the radius of the sphere?
b) Find the ratio of the volume of the sphere and cube
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Question 1129835: Two holes of radius 8.2 cm are drilled into the ground so that they overlap and their center are 11.4 cm apart. Find the total area of the resulting hole. Hint: Do not include two of the hatched area
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Question 1130136: Below is the graph of x^2 + 4y^2 =16. Write the distance from (0,0) to (X,Y) as d(x), as a function of x. The picture is of a circle with a line. The line goes from the right side of the circle which is point (x,y) to the center point which is (0,0). D(x) is in the middle of the line.
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Question 1130502: Find the equation of a circle whose center is on 2x+y=1, tangent to 3x-4y=10 and radius 5. thank you
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Question 1130502: Find the equation of a circle whose center is on 2x+y=1, tangent to 3x-4y=10 and radius 5. thank you
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Question 1130575: find the equation of the set of points whose distance of each element from (3,2) is twice its distance from (-1,4). thanks youuu
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Question 1130575: find the equation of the set of points whose distance of each element from (3,2) is twice its distance from (-1,4). thanks youuu
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Question 1130621: Two of the diameter arex+y=6 and x+2y=8 and radius 10

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Question 1130501: Find the equation of a circle tangent to 3x-4y+30=0 and 4x+3Y=35 and passes through (4,-2). thank you
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Question 1131347: A manufacturer designs a BBQ from an old steel drum with a diameter of 55 cm. As shown a section 25 cm wide is cut off the top of the drum to enable a grilling surface. He wants to advertise the depth of the BBQ so it can double as a smoker. How deep will the BBQ be?
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Question 1131646: PQ is a diameter of a circle centered at O. R is a point on the circle such that angle ROQ is 120°. If the circumference of the circle is 9π, then what is the length of chord PR?
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Question 1131876: Convert 4 radians to degrees.

A. 9.6°
B. 242.6°
C. 6.8°
D. 229.2°
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Question 1132058: The plane of a small circle on a sphere is 15 inches from the center. If the sphere has a radius of 25 inches, find the radius of the small circle. Find the greatest circle distance from pole to a point A on the great circle circumference
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Question 1132503: 7
For the figures below, assume they are made of semicircles, quarter circles and squares. For each shape, find the area and perimeter. Give your answer as a completely simplified exact value in terms of π (no approximations).
a
Answer:
A =
cm2
P =
cm
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Question 1132618: For the figures below, assume they are made of semicircles, quarter circles and squares. For each shape, find the area and perimeter. Give your answer as a completely simplified exact value in terms of π (no approximations).
A=
P=
https://homework.russianschool.com/resource?key=40604j1oaga2y
https://homework.russianschool.com/resource?key=40602j1oaffqg
https://homework.russianschool.com/resource?key=40609j1oalzk2
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Question 1132621: Find the length of the intercepts of the circle 3x^2+3y^2-5x+3y=0 on the co-ordinate axes.
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Question 1132646: Hello!
I have a problem that has a triangle inscribed in a circle with points A, B, and C, and center of the circle, O.
This is what I have given:
Given: m∠A = 53°, BC = 25
I need to find the radius of the circle:
Find: R (OC = OB = OA)
I tried drawing a perpendicular line from point B (on top) to line AC (bottom), but I can't solve it that way because we have no way of knowing that It can split the given triangle into 2 equal parts. I'm not sure how to solve this problem and need help.
Thanks for helping!
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Question 1132700: Write the standard form of the equation of the circle
inside the circle (1,4)outside the circle (7.4)
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