ICSE Class 7 Answered
A laddel of 15 m long Reaches a window which is 9m above the ground on one side of a street. Keeping it's foot at the same point, the ladder is turned to other side of the street to reach a window of 12m high. Find the width of the street
Asked by aniketbagree693aniketbagree693 | 23 Oct, 2018, 04:01: PM
Expert Answer
In ΔDCE using Pythagoras,
DC2 + CE2 = DE2
where DC = 9 m and DE = 15 m
we get CE = 12 m
Similarly find BE using Pythagoras in ΔABE we get BE = 9 m.
Hence, BC = BE + EC = 12 + 9 = 21 m
Answered by Sneha shidid | 24 Oct, 2018, 09:50: AM
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