Q9 of 42 Page 220

Two poles of heights 6m and 11m stand on a plane ground. If the distance between the feet of the pole is 12m find the distance between their tops.


Given, BC = 6m, AD = 11m, BC = ED


And AE = AD-ED = 11-6 = 5m


BE = CD = 12m


Need to find AB


⇒ Now, In Δ ABE, ∠E = 90°


⇒ AB2 = AE2 + BE2


⇒ AB2 = 52 + 122 = 169


⇒ AB2 = 169


⇒ AB = 13m


The distance between their tops is 13m


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