Home
Class 9
MATHS
In a triangle with one angle (2pi)/(3), ...

In a triangle with one angle `(2pi)/(3),` the lengths of the sides form an A.P. If the length of the greatest side is 7 cm, the radius of the circumcircle of the triangle is

Promotional Banner

Topper's Solved these Questions

  • CIRCLES

    MODERN PUBLICATION|Exercise EXERCISE|94 Videos

  • AREA OF PARALLELOGRAMS AND TRIANGLES

    MODERN PUBLICATION|Exercise EXERCISE|83 Videos

  • CONSTRUCTIONS

    MODERN PUBLICATION|Exercise EXERCISE|69 Videos

Similar Questions

Explore conceptually related problems

The lengths of three sides of a triangle are 20 cm, 16 cm and 12 cm. The area of the triangle is

The lengths of the sides of a triangle are in the ratio 3:4:2 and its perimeter is 144 cm. Find the area of the triangle.

If the lengths of the side of a triangle are 3,4 and 5 units, then find the circum radius R.

If the lengths of the sides of a right angled triangle are in A.P., then show that their ratio is 3:4:5.

The angle bisector of any angle of a triangle and perpendicular bisector of the opposite side if intersect, they will intersect on the circumcircle of the triangle.

The lengths of each side of an equilateral triangle of area 4sqrt(3)cm^2 is

Triangle is possible with length of sides 6cm, 4cm, 10cm.

MODERN PUBLICATION-CIRCLES-EXERCISE
  1. If diagonals of a cyclic quadrilateral are diameters of the circle thr...

    Text Solution

    |

  2. Given three non-collinear points. How many circles can be drawn throug...

    Text Solution

    |

  3. In a triangle with one angle (2pi)/(3), the lengths of the sides form ...

    Text Solution

    |

  4. In a circle C(O,r), AOB and COD are two diameters perpendicular to eac...

    Text Solution

    |

  5. Two congruent circles with centres C and O' intersect at A and B. If a...

    Text Solution

    |

  6. True/False: The degree measure of a semi-circle is 180^@

    Text Solution

    |

  7. (True/ False) A circle has only finite number of equal chords.

    Text Solution

    |

  8. True/False: The perimeter of circle is called its circumference .

    Text Solution

    |

  9. True/False: A circle divides the plane into three parts.

    Text Solution

    |

  10. True/False: Let O be the centre of a circle with radius r. Then a po...

    Text Solution

    |

  11. True/False: An equilateral triangle ABC is inscribed in a circle wit...

    Text Solution

    |

  12. The perpendicular from the centre of a circle to a chord bisects the c...

    Text Solution

    |

  13. In a circle C(O,r), AOB and COD are two diameters perpendicular to eac...

    Text Solution

    |

  14. True/False: The degree measure of a semi-circle is 180^@

    Text Solution

    |

  15. Two circles of radii 5 cm and 3 cm intersect at two points and the dis...

    Text Solution

    |

  16. Fill in the Blanks: Angles in the same segment of a circle are

    Text Solution

    |

  17. Fill in the Blanks: Equal arcs of a circle subtend angles at the cen...

    Text Solution

    |

  18. Fill in the Blanks: Angles subtended by an arc at the centre of a ci...

    Text Solution

    |

  19. Fill in the Blanks: Equal chords of a cirlce (or congruent circles) ...

    Text Solution

    |

  20. Fill in the Blanks: The line drawn through the centre of a circle to...

    Text Solution

    |