A girl of height 90 cm is walking away from the base of a lamp-post at a speed of 1.2 m/s . If the lamp is 3.6 m above the ground .Find the length of her shadow after 4 seconds.

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dineshGeometry
A girl of height 90 cm is walking away from the base of a lamp-post at a speed of 1.2 m/s . If the lamp is 3.6 m above the ground .Find the length of her shadow after 4 seconds.