` 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`

If ΔA B C ∼ ΔD E F such that area of ΔA B C is 9\ c m^2 and the area of ΔD E F is 16\ c m^2 and B C=2. 1 cm. Find the length of E F .

If ΔA B C ∼ ΔD E F such that A B=5c m , area (Δ A B C)=20\ c m^2 and area (Δ D E F)=45\ c m^2 , determine D E .

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.

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 Delta A B C , D and E are points on side A B and A C respectively such that D E is parallel to B C\ & A D : D B=3:1 . If E A=3. 3 c m , then A C= mmmmmmmm (a) 1. 1 c m (b) 4c m (c) 4. 4 c m (d) 5. 5 c m

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 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

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 the perimeter of a square is 16 cm, then its area is (a)4 c m^2 (b) 8\ c m^2 (c) 16\ c m^2 (d) 12\ c m^2

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