` 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`

A B C is such that A B=3c m , B C=2c m and C A=2. 5 c m . If D E F A B C and E F=4c m , then perimeter of D E F is 7. 5 c m (b) 15 c m (c) 22. 5 c m (d) 30 c m .

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.

A B C D is a rectangle with O as any point in its interior. If a r ( A O D)=3 c m^2a n d a r ( B O C)=6 c m^2, then area of rectangle A B C D is: 9c m^2 (b) 12 c m^2 (c) 15 c m^2 (d) 18 c m^2

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

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 .

Let A B C D be a parallelogram and A B E F be a rectangle with E F lying along the line C D . If A B=7c m and B E=6. 5 c m , then the area of the parallelogram is 11. 375 c m^2 (b) 22. 75 c m^2 (c) 45 c m^2 (d) 45. 5 c m^2

In A B C , D and E are points on side A B and A C respectively such that D E B C\ and A D : D B=3:1 . If E A=3. 3 c m , then A C= 1. 1 c m (b) 4c m (c) 4. 4 c m (d) 5. 5 c m

A B C D is a trapezium in which A B D Cdot If a r( A B D)=24\ c m^2a n d\ A B=8\ c m , then height of A B C is 3 cm (b) 4 cm (c) 6 cm (d) 8 cm

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 a A B C ,\ D ,\ E ,\ F are the mi-points of sides B C ,\ C A\ a n d\ A B respectively. If a r( A B C)=16 c m^2, then a r\ (t r a p e z i u m\ F B C E)= 4\ c m^2 (b) 8\ c m^2 (c) 12 c m^2 (d) 10 c m^2