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Delta ABC~Delta DEF and the perimeters o...

`Delta ABC~Delta DEF` and the perimeters of `Delta ABCd and Delta DEF` are 30 cm and 18 cm respectively. If `BC=9 cm`, then EF=?

A

6 . 3 cm

B

5 . 4 cm

C

7 . 2 cm

D

4 . 5 cm

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The correct Answer is:
B
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MTG IIT JEE FOUNDATION-TRIANGLES - Exercise (Multiple Choice Questions) (LEVEL -1 )
  1. In Delta ABC it is given that (AB)/(AC)=(BD)/(DC) . If angle B=70^(@) ...

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  2. In DeltaABC,AD is the bisector of angleA . Then , (ar(DeltaABD))/(ar(D...

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  3. Delta ABC~Delta DEF and the perimeters of Delta ABCd and Delta DEF are...

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  4. DeltaABC ~ DeltaDEF such that AB = 9.1 cm and DE =6.5 cm. If the perim...

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  5. A vertical stick 20 m long casts a shadow 10m long on the ground. A...

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  6. Two isosceles triangles have equal angles and their areas are in the ...

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  7. If A B C and D E F are similar such that 2\ A B=D E and B C=8c m ...

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  8. In A B C , a line X Y parallel to B C cuts A B at X and A C at Y ....

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  9. Let ABC be an equilateral triangel. Let BE|CA meeting CA at E, then (A...

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  10. A right triangle has hypotenuse of length p\ c m and one side of...

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  11. ABC is an isosceles triangle with AC = BC. If A B^2=2A C^2, prove tha...

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  12. DeltaABC is a right triangle , right angled at A and ADbotBC . If AB...

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  13. Delta ABC is right-angled at A and AD bot BC. If BC=13 cm and AC=5 cm,...

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  14. L and M are the mid points of AB and BC respectively of DeltaABC , r...

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  15. In the given figure , x in terms of a , b and c is

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  16. In figure, two line segments AC and BD intersects each other at the po...

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  17. In the given figure , value of x is

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  18. In the given figure , if (AB)/(AC)=(BD)/(CD) , then angleABD=

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  19. The point in the plane of a triangle which is at equal perpendicular d...

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  20. PSR is a triangle right angled at s . D is the mid -point of SR .If t...

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