In Fig. 7.179, DE || BC (i)If DE= 4 cm, BC = 6cm and Area (ΔADE)=16cm

1.	In Fig. 7.179, DE \|\| BC (i)If DE= 4 cm, BC = 6cm and Area (ΔADE)=16cm2, find the area of ΔABC. (ii) If DE =4 cm, BC = 8 cm and Area (ΔADE)=25cm2, find the area of ΔABC. (iii) If DE : BC = 3 : 5. Calculate the ratio of the areas of ΔADE and the trapezium BCED.
Answer» In Fig. 7.179, DE \|\| BC (i)If DE= 4 cm, BC = 6cm and Area $(Δ A D E) = 16 c m^{2}$ , find the area of $Δ A B C$ . (ii) If DE =4 cm, BC = 8 cm and Area $(Δ A D E) = 25 c m^{2}$ , find the area of $Δ A B C$ . (iii) If DE : BC = 3 : 5. Calculate the ratio of the areas of $Δ A D E$ and the trapezium BCED.

In Fig. 7.179, DE || BC (i)If DE= 4 cm, BC = 6cm and Area (ΔADE)=16cm2, find the area of ΔABC. (ii) If DE =4 cm, BC = 8 cm and Area (ΔADE)=25cm2, find the area of ΔABC. (iii) If DE : BC = 3 : 5. Calculate the ratio of the areas of ΔADE and the trapezium BCED.

Answer»

In Fig. 7.179, DE || BC
(i)If DE= 4 cm, BC = 6cm and Area $(Δ A D E) = 16 c m^{2}$ , find the area of $Δ A B C$ .
(ii) If DE =4 cm, BC = 8 cm and Area $(Δ A D E) = 25 c m^{2}$ , find the area of $Δ A B C$ .
(iii) If DE : BC = 3 : 5. Calculate the ratio of the areas of $Δ A D E$ and the trapezium BCED.

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In Fig. 7.179, DE || BC (i)If DE= 4 cm, BC = 6cm and Area (ΔADE)=16cm2, find the area of ΔABC. (ii) If DE =4 cm, BC = 8 cm and Area (ΔADE)=25cm2, find the area of ΔABC. (iii) If DE : BC = 3 : 5. Calculate the ratio of the areas of ΔADE and the trapezium BCED.

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