Question

In triangle ABC,AC=15cm and DE parallel BC,if AB/AD=3,Find BC​

Answer 1

Answer:

Given: ADBDADBD = 3434 and AC = 15 cm [As DE ∥ BC] Required to find AE. By using Thales Theorem, [As DE ∥ BC] ADBDADBD = AECEAECE Let, AE = x, then CE = 15 - x. ⇒ 3434 = x(15–x)x(15–x) 45 – 3x = 4x -3x – 4x = – 45 7x = 45 x = 457457 x = 6.43 cm ∴ AE = 6.43 cmRead more on Sarthaks.com - https://www.sarthaks.com/633922/in-abc-and-are-points-the-sides-ab-and-ac-respectively-such-that-de-bc-if-ad-db-and-ac-15-cm-find