To apply face powder, cleanse and moisturize the skin, then use a brush, puff, or sponge to pick up the powder. Gently pat or sweep it over the face, focusing on oily areas, for a smooth, matte finish.
In the adjoining figure, \( AP = 1 \, \text{cm}, \ BP = 2 \, \text{cm}, \ AQ = 1.5 \, \text{cm}, \ AC = 4.5 \, \text{cm} \) Prove that \( \triangle APQ \sim \triangle ABC \).
Hence, find the length of \( PQ \), if \( BC = 3.6 \, \text{cm} \).