Tutors Answer Your Questions about Circles (FREE)
Question 571232: A park has just installed a circular fountain in 8 meters diameter. The park wants to pave a 1.5 meter wide path around the fountain. If paving costs 10 dollars per square meter, find the cost to the nearest dollar of the paved path around the fountain.
Click here to see answer by Theo(2967)   |
Question 564699: Explain (suggested length 1–2 paragraphs) how the functions and definitions in parts A1 and A2 are related by investigating a right triangle inscribed in a unit circle. Refer to the diagrams in parts A1 and A2 as necessary.
a. Explain how you remember the relationships among these trigonometric functions.
part a1 refers to the right triangle definitions in this completed chart
part a2 refers to the unit circle definitions
Function Right Triangle Definition Unit Circle Definition
Sine Opposite/hypotenuse Sin (ang+ 2 pi k)
Cosine Adjacent/hypotenuse Cos (ang+ 2 pi k)
Tangent Opposite/adjacent Sin/cos
Cosecant Hypotenuse/side opposite acute angle
Reciprocal of sine 1/sin
Secant Hypotenuse/short side adjacent to acute angle
Reciprocal of cosine 1/cos
Cotangent Side adjacent to acute angle/side opposite angle 1/tan or sin/cos
Click here to see answer by richard1234(4789)  |
Question 563793: The larger circle circumscribes an equilateral triangle, which circumscribes a small circle. The area of the larger circle is 12pi. What is the triangle's perimeter. I not sure how to do this problem and how to work it out.
Click here to see answer by Theo(2967) |
Question 560343: Please help me solve this :
A semi Circle has a diameter of 20.9cm
Work out the perimeter of the semi circle
Give your answer to an appropriate degree of accuracy.
Now i know you have to do pi * diameter,
SO - 3.142 *20.9 = 65.67
Click here to see answer by stanbon(48502) |
Question 559534: I am asked to: Find the equation of each circle. Express my answer in general form.
i am given:
Center (5,-3) and radius of 2root2
i know i am suppose to use
(x-h)^+(y-k)^=r^ ... but having trouble completing the square
Click here to see answer by richard1234(4789) |
Question 557774: 1. two parallel lines touch the circle at points A and B respectively. if area of the circle is 25pie cm2. then AB is equal to?
2. Area of the greatest circle of the circles constructed on the side of a right triangle, taking these sides as diameters, if the two smalles sides are 1.5cm and 2cm.
Click here to see answer by mananth(10539)  |
Question 557522: The manager of a sandwich shop is planning to make a circle graph showing the types of sandwiches sold in one day. The table below summarizes these data.
Sandwiches Sold in One Day
Roast beef
195
Turkey-and-cheese
125
Ham-and-cheese
75
Vegetable
50
Other
55
What central angle should the manager use for the section representing the ham-and-cheese sandwich?
Click here to see answer by neatmath(225)  |
Question 555063: what is the equation of a circle with center (-6,4) passing through the points (9,4).?
Hope to hear from you soon.
Thank you and Godbless!
I promise to pay your kindness in any way that i can.
Click here to see answer by KMST(576)  |
Question 553984: This is a personal question, just wondering how i could solve it, however i will accept an answer.
If a beehive makes crops take less time to get to a harvesting stage, and a beehive covers a Circle with a radius of 13 Meters. How large of a square could i put inside of the Circle so that the most crop area was covered? I thought it would be 18 Meters x 18 meters, but it doesn't seem to work. Any Ideas?
Click here to see answer by Theo(2967) |
Question 553984: This is a personal question, just wondering how i could solve it, however i will accept an answer.
If a beehive makes crops take less time to get to a harvesting stage, and a beehive covers a Circle with a radius of 13 Meters. How large of a square could i put inside of the Circle so that the most crop area was covered? I thought it would be 18 Meters x 18 meters, but it doesn't seem to work. Any Ideas?
Click here to see answer by Alan3354(21546)  |
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