A regular decagon(12 sides) in inscribed in a circle with the radius r. The decagon has an area of108 in^2. What is the radius of the cirlce?

22,958 questions
1. calculus

A regular decagon(12 sides) in inscribed in a circle with the radius r. The decagon has an area of108 in^2. What is the radius of the cirlce?

asked by Kristina on May 19, 2011
2. calculus

A regular decagon(12 sides) in inscribed in a circle with the radius r. The decagon has an area of108 in^2. What is the radius of the cirlce?

asked by Kristina on May 19, 2011
3. geometry

The area of a regular decagon is 50cm2. What is the area of a regular decagon with sides four times the sides of the smaller decagon?

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4. math

What is the sum of the measures of the angles of a regular decagon? What is the measure of each angle in the decagon? 1,620°; 162° 2,880°; 288° 1,440°; 144° none of these

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5. Math

Given the regular decagon what is the measure of each numbered angle? There is a one in the first triangle, a three in the second, and a two in the sixth triangle in the decagon. Here are the answer choices m1=72, m2=18, m3=36 m1=18, m2=36, m3=72 m1=36,

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6. Math

How big is each interior angle in a regular decagon? would this be 4.4 (144/10)? How big is each exterior angle of a regular decagon? Is this 36? (360/10)

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10. Math

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11. College Geometry

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13. Geometry

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14. GEOMETRY CIRCLE

1.An isosceles triangle with each leg measuring 13 cm is inscribed in a circle . if the altitude to the base is 12 cm find the radius of the circle 2. Circles a and b are tangent at point c. p is on circle a and q is on circle b such that pq is tangent to

asked by BARBIE LEE on December 8, 2013

HELP ME PLEASE. 1.An isosceles triangle with each leg measuring 13 cm is inscribed in a circle . if the altitude to the base is 12 cm find the radius of the circle 2. Circles a and b are tangent at point c. p is on circle a and q is on circle b such that

asked by BARBIE LEE on December 8, 2013

1.An isosceles triangle with each leg measuring 13 cm is inscribed in a circle . if the altitude to the base is 12 cm find the radius of the circle 2. Circles a and b are tangent at point c. p is on circle a and q is on circle b such that pq is tangent to

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18. math

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19. Math

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20. GEOMETRY CIRCLES

1. Ab is a chord of a circle with center o and radius 52 cm . point m divides the chord ab such that am = 63 cm and mb=33 cm find om 2. A circle is inscribed in a triangle whose sides are 10, 10 and 12 units . a second smaller circle is inscribed tangent

asked by Talon on December 10, 2013

1. Ab is a chord of a circle with center o and radius 52 cm . point m divides the chord ab such that am = 63 cm and mb=33 cm find om 2. A circle is inscribed in a triangle whose sides are 10, 10 and 12 units . a second smaller circle is inscribed tangent

asked by Talon on December 9, 2013

1. Ab is a chord of a circle with center o and radius 52 cm . point m divides the chord ab such that am = 63 cm and mb=33 cm find om 2. A circle is inscribed in a triangle whose sides are 10, 10 and 12 units . a second smaller circle is inscribed tangent

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31. math

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32. geometry

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33. Math

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34. math

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35. geometry

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36. geometry

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37. MATH

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40. geometry

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41. Geometry

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42. Geometry

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43. geometry maths

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44. Geometry

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45. geomery

An isosceles triangle has two 10.0-inch sides and a 2w-inch side. Find the radius of the inscribed circle of this triangle, in the cases w = 5.00, w = 6.00, and w = 8.00. And Write an expression for the inscribed radius r in terms of the variable w , then

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46. geometry

An isosceles triangle has two 10.0-inch sides and a 2w-inch side. Find the radius of the inscribed circle of this triangle, in the cases w = 5.00, w = 6.00, and w = 8.00. Then Write an expression for the inscribed radius r in terms of the variable w , then

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47. geometry

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48. geometry

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49. Math

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50. easy geometry

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51. geometry

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52. geometry

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53. geometry

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54. GEOMETRY

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55. geometry

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56. geometry

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57. math

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58. Math

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59. maths

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60. math

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61. Math

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62. Area Geometry

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63. Math

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64. maths

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65. Trig-Algebra help asap

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66. Trig-Algebra help asap

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67. maths

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68. math (geometry)

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69. math

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70. singh

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71. geometry

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72. Math

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73. physics

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74. maths

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75. maths

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76. help hexagon geometry

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77. math

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78. Urgent CALCULUS

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79. geo

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80. Solid Mensuration

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81. Geometry

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82. math

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83. GEOmetry!!.....

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84. geometry

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85. Geometry

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86. math

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87. geometry

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88. geometry

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89. maths

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90. statistics

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91. math

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92. Maths

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93. math

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94. geometry circle

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95. math

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96. Algebra

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97. Calculus

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98. Circumference and Area of Circles

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99. math

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100. Geometry

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