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Triangles A B C and D E F are similar...

Triangles `A B C` and `D E F` are similar. If area `( A B C)=16\ c m^2` , area `( D E F)=25\ c m^2` and `B C=2. 3 c m ,` find `E Fdot` (ii) If area `( A B C)=9\ c m^2` , area `( D E F)=64\ c m^2` and `D E=5. 1 c m ,` find `A Bdot` (iii) If `A C=19 c m` and `D F=8c m` , find the ratio of the area of two triangles.

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Triangles A B C and D E F are similar. If area ( A B C)=36 c m^2 , area ( D E F)=64 c m^2 and D E=6. 2 c m , find A Bdot (ii) If A B=1. 2 c m and D E=1. 4 c m , find the ratio of the areas of A B C and D E F .

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 a A B C , A D is the bisector of /_A , meeting side B C at D . If A B=10 c m , A C=14 c m and B C=6c m , find B D and D C (ii) If A C=4. 2 c m , D C=6c m and B C=10 c m , find A B . (iii) If A B=5. 6 c m , A C=6c m and D C=3c m , find B C .

In a A B C , A D is the bisector of /_A , meeting side B C at D . If B D=2. 5 c m , A B=5c m and A C=4. 2 c m , find D C . (ii) If B D=2c m , A B=5c m and D C=3c m , find A C . (iii) If A B=3. 5 c m , A C=4. 2 c m and D C=2. 8 c m , find B D .

In Fig. 4.178, D E B C (FIGURE) If D E=4c m , B C=6c m and Area ( A D E)=16 c m^2 , find the area of A B C . (ii) If D E=4c m , B C=8c m and Area ( A D E)=25 c m^2 , find the area of A B C . (iii) If D E : B C=3:5 . Calculate the ratio of the areas of A D E and the trapezium B C E D .

A B C D E F . If B C=3c m , E F=4c m and a r( A B C)=54 c m^2 , then a r( D E F)= 108 c m^2 (b) 96 c m^2 (c) 48 c m^2 (d) 100 c m^2

In Figure, A B C D\ a n d\ F E C G are parallelograms equal in area. If a r\ ( A Q E)=12 c m^2, then a r\ (^(gm)F G B Q)= 12\ c m^2 (b) 20\ c m^2 (c) 24\ c m^2 (d) 36\ c m^2

In a A B C , D and E are points on the sides A B and A C respectively such that D E B C If A D=6\ c m , D B=9\ c m and A E=8\ c m , find A C . (ii) If (A D)/(D B)=3/4 and A C=15\ c m , find A E . (iii) If (A D)/(D B)=2/3 and A C=18\ c m , find A E .

In a A B C , A D is the bisector of /_A , meeting side B C at D . If A D=5. 6 c m , B C=6c m and B D=3. 2 c m , find A C . (ii) If A B=10 c m , A C=6c m and B C=12 c m , find B D and D C .

In a A B C , D and E are points on the sides A B and A C respectively such that D E B C If A D=2 c m , A B=6 c m and A C=9 c m , find A E . (ii) If (A D)/(B D)=4/5 and E C=2. 5 c m , find A E . (iii) If A D=x , D B=x-2 , A E=x+2 and E C=x-1 , find the value of x .

RD SHARMA-TRIANGLES-All Questions
  1. Two isosceles triangles have equal vertical angles and their areas ...

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  2. In Fig. 4.176, X Y A C and X Y divides triangular region A B C ...

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  3. Triangles A B C and D E F are similar. If area ( A B C)=16\ c m^2 ,...

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  4. Triangles A B C and D E F are similar. If area ( A B C)=36\ c m^2 ,...

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  5. In Fig. 4.177, A C B A P Q . If B C=10 c m , P Q=5c m , B A=6. 5...

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  6. The areas of two similar triangles are 81\ c m^2 and 49\ c m^2 resp...

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  7. The areas of two similar triangles are 169\ c m^2 and 121\ c m^2 re...

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  8. Two isosceles triangles have equal vertical angles and their areas ...

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  9. The areas of two similar triangles are 25\ c m^2 and 36\ c m^2 resp...

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  10. The corresponding altitudes of two similar triangles are 6 cm and 9...

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  11. A B C is a triangle in which /A=90o,\ \ A N|B C ,\ \ B C=12 c m and...

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  12. In Fig. 4.178, D E B C (FIGURE) If D E=4c m , B C=6c m and Area ( ...

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  13. In A B C ,\ D and E are the mid-points of A B and A C respectively...

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  14. In Fig. 4.179, A B C and D B C are on the same base B C . If A...

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  15. A B C D is a trapezium in which A B C D . The diagonals A C and...

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  16. In A B C , P divides the side A B such that A P : P B=1:2 . Q is a...

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  17. The areas of two similar triangles are 100\ c m^2 and 49\ c m^2 res...

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

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  19. If A B C D E F such that A B=5c m , area ( A B C)=20\ c m^2 and are...

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  20. In A B C , P Q is a line segment intersecting A B at P and A C at ...

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