If ` A B C D E F` such that `A B=1. 2 c m` and `D E=1. 4 c m` . Find the ratio of areas of ` A B C` and ` D E F` .

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 .

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 .

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

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

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 2\ A B=D E and B C=8c m , then E F=

In Figure, D E || B C in /_\ A B C such that B C=8c m , A B=6c m and D A=1. 5 c m . Find D 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

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

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 .