Question

A ladder 15 m long reaches window D which is 9 m above the ground on one side
of the street. Keeping the foot of the ladder at the same point, the ladder is
turned to the other side of the street to reach window A 12 m high.what is the distance between Point E and C.​

Answer 1

Answer:

ANSWER

In △ADC,

AD

2

+AC

2

=CD

2

9

2

+AC

2

=15

2

AC

2

=225−81

AC=12 m

In △BEC,

EC

2

=BC

2

+BE

2

15

2

=12

2

+BC

2

225−144=BC

2

BC=9 m

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

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