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

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Geometry: Circles and their properties

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Question 195: what does pie equal to. 2
Click here to see answer by ichudov(404)

Question 1364: Supose the diameter of a circle is 50 feet long and has a chord of 48 feet long. What is the distance from the center of the circle to the chord.
Click here to see answer by khwang(438)

Question 1363: What is the difference between an arc measure and an arc length in a circle?
Click here to see answer by jontull(3)

Question 2031: A sheet of metal in the form of a sector of a circle of angle 90 degrees and radius 16cm is folded to form an open conical cup. The capacity of the cup is -?

Click here to see answer by khwang(438)

Question 2185: The area of a circle is 20 pie. Find the radius in simplest form?
Click here to see answer by longjonsilver(2297)

Question 2186: In terms of pie, how much further does a 70cm diameter bicycle tire travel in one revolution than a 50cm bicycle tire?

Click here to see answer by longjonsilver(2297)

Question 2313: I have 100 feet of fence. What shape would maximize the enclosure. Thanks
Click here to see answer by longjonsilver(2297)

Question 2721: what is the formula for a function in finding a chord of a circle?
Click here to see answer by longjonsilver(2297)

Question 2799: A square barn measures 42 ft on each side. A goat is tethered outside by a rope that is attached to the "outside" of one corner of the barn.
A) Suppose that the length of the rope is 28 ft. On how many square feet of land is the goat able to graze?
Click here to see answer by kiru_khandelwal(79)

Question 2702: Please do you have a simple formula for finding the centre of a 2 dimensinal circle if I know 3 points on this circle?
Click here to see answer by xcentaur(357)

Question 2935: Is there a formula for finding the radius of an arc, when only 3 points are known on the arc?
Click here to see answer by khwang(438)

Question 3429: If the number of square units in the area of circle C is twice the number of linear units in the circumference of C, what is the number of square units in the area?
(A) 4
(B) 8
(C) 4π
(D) 8π
(E) 16π
Click here to see answer by drglass(89)

Question 3583: What is the circumference of a circle with a diameter of 30 centimeters?
a) 188.4cm
b) 47.1cm
c) 94.2cm
d) 9.55cm
Click here to see answer by longjonsilver(2297)

Question 3842: What is the formula for finding the radius of a circle when you know the circumference?
Click here to see answer by longjonsilver(2297)

Question 3929: What is the radius of a circle with a diameter of 8 inches?
Click here to see answer by smartdude17(30)

Question 4036: an earthquake was felt throughout a circular area of 1,808.64 square miles. what is the radius of the circular area?
a- 24 miles
b- 576 miles
c- 12 miles
d- 20 miles
Click here to see answer by Earlsdon(4900)

Question 4035: The diameter of a round dinner plate is 10 inches. What is the area of the plate?
a- 314 square inches
b- 39.25 square inches
c- 78.5 square inches
d- 39.25 inches
Click here to see answer by Earlsdon(4900)

Question 4034: The distance from the center of a compact disc to the edge of the disc is 6 centimeters. What is the area of the compact disc?
a-36 square centimeters
b-18.84 square centimeters
c-452.16 square centimeters
d- 113.04 square centimeters
Click here to see answer by rapaljer(3620)

Question 4033: A round barbecue pit is 2 meters in diameter. What is the distance around the barbecue pit?
a- 6.28 meters
b- 3.14 meters
c- 12.56 meters
d- 18.84 meters
Click here to see answer by gsmani_iyer(161)

Question 4156: A circle has a circumference of 20(pi)meters. Sorry There is no key stroke for pi. Find the radius of the circle. Thanks.
Click here to see answer by Earlsdon(4900)

Question 4156: A circle has a circumference of 20(pi)meters. Sorry There is no key stroke for pi. Find the radius of the circle. Thanks.
Click here to see answer by rapaljer(3620)

Question 4449: OK this is a really confusing question for me i may be haveing problems with a question because i am missing certian things that i need to understand first. oh well please help me. If a hoop has an area of 25*3.14 and to jump through it a dog must have 2 inches less diameter then what is the largest the dog can get with out endangering the act
Click here to see answer by Earlsdon(4900)

Question 8176: I need to determine the circumference of a circle with radius 3 in. Give an exact answer and a decimal answer round to the nearest hungredth?
Click here to see answer by bonster(299)

Question 7885: what is the formula to figure out the diameter of a circle??
Click here to see answer by thecampusnerd(13)

Question 11064: you know the volume and hight of a cylinder, what do you have to do to work out the radiuse
Click here to see answer by Earlsdon(4900)

Question 11283: find the length of the radius of a circle diameter measures 10 inches
Click here to see answer by askmemath(368)

Question 11386: Dear tutor,
having trouble. What is radius or diameter of 36" circumference circle?
Thanks,
George Mooney
Click here to see answer by askmemath(368)

Question 12333: a spotlight rotates 360 degrees and emits a light beam that is visible up to 4,500 feet from the light. find the area covered by the light.
Click here to see answer by askmemath(368)

Question 12586: AB is a chord of a circle with centre O and is 40cm long. OD is drawn perpendicular to AB. If OD is 4.5cm in length, find the length of the radius of the circle. (all reasoning must be shown). thank you
Click here to see answer by kusha(21)

Question 12973:

Find the domain of

y = 5x2 – 14x – 10

Click here to see answer by ans_virgo4@hotmail.com(2)

Question 12966: what is the solution for finding the radius and center of this equation
x2 + 14x + y2 + 12y = – 49.

Click here to see answer by Earlsdon(4900)

Question 12975:
Find the domain of

y = 7x2 – 14/12x2 + 20

Click here to see answer by rapaljer(3620)

Question 12974:
Find the domain of

y = √x –2

Click here to see answer by rapaljer(3620)

Question 13535: this was given to me on a H.w question, I dont even know how to start,ill be glad to get help, thank you..
"In the kitchen, Susan's stove is 36 inches wide by 30 inches deep. She has 4 burners, each with a diameter of 10 inches. Find the area of the stovetop around the burners"
Click here to see answer by elima(1433)

Question 13580: I need help about right now. i really don't know what i am doing so please help me. the problem is this
Slovel each pair of equation by subtitution
x-y=7
x+y=9

Click here to see answer by kusha(21)

Question 15708: please help me on this question-- im terrible at math!
the spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, How long is each spoke? Round the answe to the nearest hundreth
Click here to see answer by Earlsdon(4900)

Question 16112: Given this equation find the radius and center of a circle.
Click here to see answer by Earlsdon(4900)

Question 16395: I need to know how to find the radius and center of x2 - 2x + y2 – 16y = – 1.
Click here to see answer by Earlsdon(4900)

Question 15707: What is the circumference of a circle with a diameter of 30 centimeters?
Click here to see answer by piglet162431(90)

Question 16753: What is the circumference of a circle if the area of the circle is 64? My homework gives me 5 choices.
1) 8
2) 16
3) 8 divided by the square root of pie
4)16 times the square root of pie
5) 32 times pie

Click here to see answer by venugopalramana(3286)

Question 17524: Find the area of the circle with a radius of 6 cm. (use 3.14 as an approximation of pie)
I am given four choices, 18.84 cm ^2, 113.04 cm ^2, 37.68 cm^2, and 28.62 cm^2
Click here to see answer by venugopalramana(3286)

Question 17580: Determine the circumference of a circle with radius 3 in. Give a decimal answer rounded to the nearest hundredth.
Click here to see answer by pwac(251)

Question 17635: Prove that the inscribed angle in a semi circle is 90 degrees
Click here to see answer by venugopalramana(3286)

Question 18679: a 12-inch diameter pizza is cut into 8 equal pieces. what is the area of each piece?
Click here to see answer by smik(40)

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