Question

A ladder is 25 m long that reaches a window that is 15m above the ground on one side of a street.When the foot of ladder is not moved and the ladder is turned to other sideof the street it reaches a window 20n high. Find the width of the street.​

Answer 1

Answer:

In △ADC,

AD2+AC2=CD2

92+AC2=152

AC2=225−81

AC=12 m

In △BEC,

EC2=BC2+BE2

152=122+BC2

225−144=BC2

BC=9 m

Width of the road = AC+BC = 12+9 = 21 m

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