Questions on Geometry: Polygons answered by real tutors!

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Question 571070: What is the height and radius of a cube with a volume of 113.1, with an answer in centimeters preferably??
Thank you, I apreciate your help

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Question 571027: how do you find the area of a 20-ogon
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Question 570408: If the exterior angle of a regular polyogn is 15, how do you find the central angle?
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Question 570360: if a polygon is regular and one of the vertex angles is 165 degrees, how many sides must it have?
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Question 570021: If you were to place a rhombus in the coordinate plane so that its diagonals lie along the axes, what would be the coordinates of the vertices using as few variables as possible?
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Question 569498: Hi,
1. suppose that the sum of the measures of the vertex angles of a polygon is 1620 degrees. How many sides does the polygon have?
what I've tried:
(n-2)180/n= i multiplied "n" by both sides to cancel out the fraction and then use distribution property to fix the equation.
180n - 360= 1620n
-180n 180n
-360= 1440n
-0.25=n
but that is the wrong answer. the book says that the answer of sides is 11.
Please help me.

Click here to see answer by KMST(576)

Question 568980: what is the perimeter of a regular dodecagon (a polygon which has 12 sides)whose area is 24 + 12 sqrt(3).
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Question 569384: Please help!!!! I will praise you!!!
At 9:30 am tomorrow, we open our doors for the last time. The price of every item in the store will be reduced 10% every hour, on the hour, beginning at 10am until everything goes, The stereo calvin would love to buy is $359 dollars.. Calvin has saved $270 for the stereo. Henry told calvin that at 11:01 am, the price of the stereo will be $287.20. Jacob says $290.79 will be the price. What might he expect the price to be at 11:01 and why? Henry claims that since the prices go down 105 every hour, after 10 hours, the stereo will be free. He tells calvin to arrive at the store at 8pm for a free stereo. Do you agree with Henry's reasoning? Explain why and why not. Sales tax is 6%. Assuming he gets no more money, explain to Calvin when he will be able to afford the stereo and how you figured this out. Be sure your work is shown in an organized format so that it can be easily followed

THANKS SOO MUCH!!!!!!!!!!!!!!!!! :DDDDDDDDDDDDDDDD
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Question 569103: why can't the size of the angle at the centre of a regular polygon be 25 degrees?
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Question 568483: If the measure of each interior angle of a regular polygon is five times the measure of each exterior angle, how many sides does the polygon have ?
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Question 568358:
A polygon has n sides.There of its exterior angles are 70 degree, 25 degree, 15 degree while the remaining (n-3) exterior angles are each equal to 50 degree.Find n.

affiliate network, pandora, limewire
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Question 567992: how do you use the distance formula for finding a polygon?
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Question 567831: A regular polygon of 5 sides has vertex angles which measure how many degrees?
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Question 567634: A regular polygon has 33 sides. what is the size of each interior angle
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Question 566920: how do i find the interior and exterior angles of a 900 sided regular polygon

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Question 566763: I need to find the side length of a 6 sided polygon with an apothem of 14 in. so that I may find the area.
Please help me in simple language on HOW TO FIND A SIDE LENGTH to use in formula A=1/2aP.
Thank you so much!
Click here to see answer by scott8148(5879)

Question 566580: Please help me on this, i have a test on this next class and i have no idea what im supposed to do!
The ratio of the weight of an object on Mars to its weight on Earth is 9 to 25. If a person weighs 120 pounds on Earth, how much would the person weigh on Mars?
A flagpole casts a shadow of 8.5 meters long. If an algebra student 1.6 meters tall casts a shadow of 2.0 meters long at the same time and location, how tall is the flagpole in meters?
THANKS SO MUCH!!!! :DDDDDDDDDDDDDDDDDDDDDDDDDD
Click here to see answer by ankor@dixie-net.com(12681)

Question 566587: PLEASE HELP!!!!!!!! test next class on this!
A U.S nickel is composed of 3.9 grams of copper and only 1.2 grams of nickel. How many kg of copper must be combined with 4kg of nickel in the manufacture of a nickel coin?
In a town of 30,000 households, a survey was taken to estimate the number of households in which a certain TV program had been viewed. Of the 200 residences surveyed, the program had been seen in 64. Assuming that this was a representative sample, estimate the total number of households in the town in which the program was viewed.

THANKS SOOOOOOOOOOOOOOOOOOO MUCH! <3
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Question 566312: how do you find the degree meaure of an angle in a polygon
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Question 566197: How many sides does a polygon have with interior angles that equal 72?
Thanks
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Question 566113: if you only had part of a shape and you wanted to find out how many sides the angle had in total.
how would you solve it???
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Question 565636: The sum of the interior angle measures of a convex polygon is 1620 degrees How many sides does it have?
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Question 565510: What is the sum of the measures of the interior angles of a regular polygon where a single exterior angle measures 72°?
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Question 565511: A picture frame is shaped as a heptagon. The measure of one angle is 216°. The remaining interior angles are congruent. What is the measure of each remaining interior angle in the picture frame?
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Question 565065: How Many Sides Are In The Polygon If The Measure Of The Interior Angle Is 156?
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Question 565065: How Many Sides Are In The Polygon If The Measure Of The Interior Angle Is 156?
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Question 564996: If the interior angles of a polygon equals 1,440, how many sides does it have?
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Question 564681: how many regular polygons have an interior angle that measures between 100 and 149 degrees?
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Question 564681: how many regular polygons have an interior angle that measures between 100 and 149 degrees?
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Question 564508: The sum of the measures of the interior angles of a polygon Is five times the sum of the measures of its exterior angles, one angle at each vertex. How many sides does the polygon have?
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Question 564495: how many sides does a 900 degrees polygon have

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Question 564088: Please help me solve this! i have a test on this next class and i dont know how to solve it! or polygons in general! Please help!
You are shown part of a convex n- gon. The pattern of congruent angles continues around the polygon.Use the Polygon Exterior Angles Theorem to find the value of n. Show all of your work and explain your process..
The picture i have no idea how to upload so i will describe it. It is an open, 7 sided shape that says that every other angle is equal to 125 degrees and the other angles that are not 125 degrees are 163 degrees.
I know its difficult without the diagram but please help me!!!!!! THANKYOU SOOOOOOOO MUCH!!!!!

Click here to see answer by richard1234(4789)

Question 564080: Please please por favor help me! Im in Honors Geometry and i have no idea how to solve any polygons and i have a test on this on Monday January 30 2012! please help! Thanks! :D
you've been asked to build a window frame for an octagonal window. To make the frame you'l cut identical trapezoid pieces. What are the measures of the angles of the trapezoids? Explain how you found these measures.
THANKS SOOO MUCH!!!! :D :D :D :D :D :D :D :D
Click here to see answer by richard1234(4789)

Question 563955: In a quadrilateral ABCD,angle DAB=60 degrees and the other three angles are equal. The line CE is drawn parallel to BA to meet AD at E. calculate the angles ABC and ECD.
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Question 563889: Hello I am doing my homework and I need some help with this one question, What is the angle measure of a 20 sided polygon? Do you think you could help me? Thank You!
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Question 563479: find the measure of each angle of an equiangular nonagon
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Question 563485: find the sum of the measures of the angles of a hexagon
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Question 562746: What is the ratio of the measure of an interior angle to the measure of an exteror angle in a regular hexagon? A regular decagon? A regular n-gon?
I figured out that a hexagon is 3:2 and a decagon is 4:1 but I need help with the n-gon with n as any real positive number
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Question 562780: If a/b = 5-x/x, then a+b/b = ?
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Question 562621: For each polygon, how many diagonals can be drawn from one vertex? How many different diagonals can you draw from all the vertices of each polygon?
Quadrilateral-
Pentagon-
Hexagon-
Heptagon-
Octagon-
Nonagon-
Decagon-
N-gon-
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Question 560488: The measure of an exterior angle of a polygon is 20 degrees. Find the number of sides
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Question 560370: The sum of a regular polygon's angle measures is 1440 degrees.
What is the measure of one of the angles of the regular polygon?
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Question 560250: is it possible to have a polygon whose sum of interior angle is
(1) 7 right angle
(2) 4500
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Question 560070: the interior angle of a pentagon are in the ratio 4:5:6:7:5 find each angle of a pentagon.
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350