Home
Class 10
MATHS
In Fig. 10.79, R Q is a tangent to...

In Fig. 10.79, `R Q` is a tangent to the circle with centre `O` . If `S Q=6c m` and `Q R=4c m` , then `O R=` (FIGURE) (a) 8cm (b) 3cm (c) 2.5cm (d) 5cm

Promotional Banner

Topper's Solved these Questions

  • ARITHMETIC PROGRESSIONS

    RD SHARMA|Exercise All Questions|329 Videos

  • CONSTRUCTIONS

    RD SHARMA|Exercise All Questions|21 Videos

Similar Questions

Explore conceptually related problems

In Fig.10.81,AP is a tangent to the circle with centre O such that OP=4cm and /_OPA=30o. Then,AP=(FIGURE)2sqrt(2)cm (b) 2cm (c) 2sqrt(3)cm (d) 3sqrt(2)cm

In Fig. 10.87, two equal circles touch each other at T , if Q P=4. 5 c m , then Q R= (FIGURE) (a) 9cm (b) 18cm (c) 15cm (d) 13.5cm

A P and P Q are tangents drawn from a point A to a circle with centre O and radius 9cm. If O A=15 c m , then A P+A Q= (a) 12cm (b) 18cm (c) 24cm (d) 36cm

In Fig.10.94, if AB=8cm and PE=3cm then AE=(FIGURE)(a)11cm(b)7cm(c)5cm(d)3cm

In Fig. 10.93, there are two concentric circles with centre O . P R and P Q S are tangents to the inner circle from point plying on the outer circle. If P R=7. 5 c m , then P S is equal to (FIGURE) (a) 10cm (b) 12cm (c) 15cm (d) 18cm

In Fig.10.99,DE and DF are tangents from an external point D to a circle with centre A If DE=5cm and DE perp DF, then the radius of the circle is (FIGURE) (a) 3cm(b)5cm(c)4cm(d)6cm

In the adjacent figure,if AB=12cm,quad BC=8cm and AC=10cm then AD=(FIGURE)(a)5cm(b)4cm(c)6cm(d)7cm

In Fig. 10.37, /_P Q R" "=" "100o , where P, Q and R are points on a circle with centre O. Find /_O P Rdot

In Fig. 10.97, the sides A B ,\ B C and C A of triangle A B C , touch a circle at P ,\ Q and R respectively. If P A=4c m , B P=3c m and A C=11 c m , then length of B C is (FIGURE) (a) 11cm (b) 10cm (c) 14cm (d) 15cm

A B C P Q R such that a r( A B C)=4a r( P Q R)dot If B C=12 c m , then Q R= (a) 9cm (b) 10cm (c) 6cm (d) 8cm

RD SHARMA-CIRCLES-All Questions
  1. A B and C D are two common tangents to circles which touch each oth...

    Text Solution

    |

  2. In Fig. 10.78, if A D ,\ A E and B C are tangents to the circl...

    Text Solution

    |

  3. In Fig. 10.79, R Q is a tangent to the circle with centre O . If...

    Text Solution

    |

  4. In Fig. 10.80, the perimeter of A B C is (FIGURE) (a) 30cm (b) ...

    Text Solution

    |

  5. In Fig. 10.81, A P is a tangent to the circle with centre O such...

    Text Solution

    |

  6. A P and P Q are tangents drawn from a point A to a circle with c...

    Text Solution

    |

  7. At one end of a diameter P Q of a circle of radius 5cm, tangent ...

    Text Solution

    |

  8. If P T is tangent drawn from a point P to a circle touching it a...

    Text Solution

    |

  9. In the adjacent figure, if A B=12 c m ,\ \ B C=8c m and A C=10 c m ...

    Text Solution

    |

  10. In Fig. 10.83, if A P=P B , then (FIGURE) A C=A B (b) A C=B C (c) A...

    Text Solution

    |

  11. In Fig. 10.84, if A P=10 c m , then B P= (FIGURE) sqrt(91)c m (b) s...

    Text Solution

    |

  12. In Fig. 10.86, if quadrilateral P Q R S circumscribes a circle, ...

    Text Solution

    |

  13. In Fig. 10.87, two equal circles touch each other at T , if Q P=4. ...

    Text Solution

    |

  14. In Fig. 10.88, A P B is a tangent to a circle with centre O at p...

    Text Solution

    |

  15. In Fig. 10.90, P R= (FIGURE) (a) 20cm (b) 26cm (c) 24cm (d) 28cm

    Text Solution

    |

  16. In Fig. 10.93, there are two concentric circles with centre O . P R...

    Text Solution

    |

  17. In Fig. 10.94, if A B=8c m and P E=3c m , then A E= (FIGURE) (a) ...

    Text Solution

    |

  18. In Fig. 10.95, P Q and P R are tangents drawn from P to a circle...

    Text Solution

    |

  19. In Fig. 10.96, if T P and T Q are tangents drawn from an externa...

    Text Solution

    |

  20. In Fig. 10.97, the sides A B ,\ B C and C A of triangle A B C , ...

    Text Solution

    |