Home
Class 10
MATHS
If A B C D E F such that D E=3c m , E...

If ` A B C D E F` such that `D E=3c m` , `E F=2c m` , `D F=2. 5 c m` , `B C=4c m` , then perimeter of ` A B C` is (a) 18cm (b) 20cm (c) 12cm (d) 15cm

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • SURFACE AREAS AND VOLUMES

    RD SHARMA ENGLISH|Exercise All Questions|420 Videos

  • TRIGONOMETRIC IDENTITIES

    RD SHARMA ENGLISH|Exercise All Questions|254 Videos

Similar Questions

Explore conceptually related problems

In Figure, the perimeter of A B C is (a) 30cm (b) 60cm (c) 45cm (d) 15cm

If A B C D E F such that A B=9. 1 c m and D E=6. 5 c m . If the perimeter of D E F is 25cm, then the perimeter of A B C is (a) 36cm (b) 30cm (c) 34cm (d) 35cm

If Delta A B C ~ Delta D E F such that B C=3c m , E F=4c m and a r( A B C)=54 c m^2 , then a r( D E F)=

If /_\A B C and /_\D E F are similar triangles such that A B=3c m , B C=2c m C A=2. 5 c m and E F=4c m , find the perimeter of D E F .

Triangle ABC is such that A B=3c m , B C=2c m and C A=2. 5 c m . If D E F similar A B C and E F=4c m , then perimeter of D E F is

A B C D E F , a r( A B C)=9c m^2 , a r( D E F)=16 c m^2 . If B C=2. 1 c m , then the measure of E F is 2. 8 c m (b) 4. 2 c m (c) 2. 5 c m (d) 4. 1 c m

In an isosceles triangle A B C , if A B=A C=25 c m and B C=14 c m , then the measure of altitude from A on B C is (a) 20cm (b) 22cm (c) 18cm (d) 24cm

In Fig. 10.98, a circle touches the side D F of E D F at H and touches E D and E F produced at K and M respectively. If E K=9c m , then the perimeter of E D F is (FIGURE) (a) 18cm (b) 13.5cm (c) 12cm (d) 9cm

In Fig.42, A B C D is a parallelogram in which A D=21\ c m , D H=18\ c m and D K=27\ c mdot The length of side A B is (a) 63 cm (b) 63.5 cm (c) 31.5 cm (d) 31 cm

In the adjacent figure, if A B=12 c m ,\ \ B C=8c m and A C=10 c m , then A D= (a) 5cm (b) 4cm (c) 6cm (d) 7cm

RD SHARMA ENGLISH-TRIANGLES-All Questions
  1. If in two triangles A B C and D E F , (A B)/(D E)=(B C)/(F E)=(C A)...

    Text Solution

    |

  2. A B C D E F , a r( A B C)=9c m^2 , a r( D E F)=16 c m^2 . If B C=2. ...

    Text Solution

    |

  3. The length of the hypotenuse of an isosceles right triangle whose o...

    Text Solution

    |

  4. A man goes 24m due west and then 7m due north. How far is he from t...

    Text Solution

    |

  5. If Delta A B C ~ Delta D E F such that B C=3c m , E F=4c m and a r( ...

    Text Solution

    |

  6. If Delta A B C ~ Delta P Q R such that a r( A B C)=4a r( P Q R)dot I...

    Text Solution

    |

  7. The areas of two similar triangles are 121\ c m^2 and 64\ c m^2 res...

    Text Solution

    |

  8. If A B C D E F such that D E=3c m , E F=2c m , D F=2. 5 c m , B C=4...

    Text Solution

    |

  9. In an equilateral triangle A B C if A D|B C , then

    Text Solution

    |

  10. If A B C D E F such that A B=9. 1 c m and D E=6. 5 c m . If the ...

    Text Solution

    |

  11. In an isosceles triangle A B C if A C=B C and A B^2=2A C^2 , then /...

    Text Solution

    |

  12. A B C is an isosceles triangle in which /C=90o . If A C=6c m , then...

    Text Solution

    |

  13. If in two triangles A B C and D E F , /A=/E ,\ \ /B=/F , then wh...

    Text Solution

    |

  14. In an isosceles triangle A B C , if A B=A C=25 c m and B C=14 c m ,...

    Text Solution

    |

  15. In Fig. 4.242 the measures of /D and /F are respectively (FIGURE) ...

    Text Solution

    |

  16. In Figure, the value of x for which D E || A B (a) 4 (b) 1 (c) 3 (d) 2

    Text Solution

    |

  17. In Fig. 4.244, if /A D E=/A B C , then C E= (FIGURE) (a) 2 (b) 5 (c...

    Text Solution

    |

  18. In Fig. 4.245, R S D B P Q . If C P=P D=11 c m and D R=R A=3c m ....

    Text Solution

    |

  19. In Fig. 4.246, if P B C F and D P E F , then (A D)/(D E)= (FIGURE...

    Text Solution

    |

  20. A chord of a circle of radius 10cm subtends a right angle at the cen...

    Text Solution

    |