Q41 of 186 Page 263

It is given that ΔABC ~ Δ PQR and then = ?

If two triangles are similar, the ratio of the area of triangle is equal to the square of the ratio of the sides.

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39

In the given figure, two line segments AC and BD intersect each other at the Point P such that PA = 6 cm, PB = 3 cm, PC = 2.5 cm, PD = 5 cm, ∠APB = 50° and ∠CDP = 30° then ∠PBA = ?

 40

Corresponding sides of two similar triangles are in the ratio 4 : 9. Areas of these triangles are in the ratio

 42

In an equilateral ΔABC, D is the midpoint of AB and E is the midpoint ar(ΔABC): ar(ΔADE) = ?

 43

In ΔABC and ΔDEF, we have , then ar (ΔABC): ar (ΔDEF) = ?