a ladder 15m long reaches a window which is 9 metre above the ground on one side of a straight keeping its foot at the same point . The ladder is turn to other side of the street to reach a window 12 metre height find the width of the street
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In △ABC△ABC
AB2+BC2122+BC2⟹BC=AC2=152=9mAB2+BC2=AC2122+BC2=152⟹BC=9m
In △DCE△DCE
DE2+CE292+CE2⟹CE2CE=DC2=152=225−81=12mDE2+CE2=DC292+CE2=152⟹CE2=225−81CE=12m
Hence the width of the street is BC + CE = 9+12 = 21m
AB2+BC2122+BC2⟹BC=AC2=152=9mAB2+BC2=AC2122+BC2=152⟹BC=9m
In △DCE△DCE
DE2+CE292+CE2⟹CE2CE=DC2=152=225−81=12mDE2+CE2=DC292+CE2=152⟹CE2=225−81CE=12m
Hence the width of the street is BC + CE = 9+12 = 21m
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vicky2002:
thanku so much didi
u r wlcm
yes thank you
can u help me on another sum
https://brainly.in/question/2803634
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search this question then Ram built a cubical water tank with lid for his house ,with each edge 2m .he gets the outer surface of the tank excluding the basecovered with square tiles of side 25cm .find how much he would spend for the tiles ,if one dozen of tiles costs him Rs 480
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