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

A girl of height 90cm is walking away from the foot of a lamp-post at a speed of 1.2m//sec . If the lamp is at a height of 3.6m from the ground, then the length of the shadow of the girl after 4 sec is

A 1.5m tall boy stands at a distance of 3m from a lamp post and casts a shadow of 4.5m on the ground. Find the height of the lamp.

A man of height 2 metres walks at a uniform speed of 5 km/h away from a lamp post which is 6 metres high. Find the rate at which the length of his shadow increases.

A man 6 ft tall walks away from the foot of a lamp-post 15 ft high at the rate of 3 mi/h How fast does his shadow lengthen?

A man 6 ft tall walks away from the foot of a lamp-post 15 ft high at the rate of 3 mi/h how fast does the tip of his shadow move?

A train take 4 sec. to pass a telegraph post and 20 sec. to pass a 26m. long bridge. Let us find the length of the train and also its speed.

In another mine, the lift goes down 4 m in every one min. If the lift starts from 15 m above the ground, let's find the position of the lift after 30 mintue.

A 5 ft long walks away from the foot of a 12(1)/(2)ft high lamp-post at the rate of 3 mi/h. find the rate at which his shadow is increasing.

A 5 ft long man walks away from the foot of a 12 1/2 ft high lamp post at the rate of 3 mile/h. Find the rate at which his shadow is increasing.

A ladder is situated against a wall in such a way that its foot is at a distance of 2.5m away from the wall and its vertex touches a window which is at a height of 6m from the ground.Then the length of the ladder will be