A 20m deep well with distance 7m is dug and the earth from digging is evenly spread out to form a platform 22 m by 14 m. Find the height of the platform.

A 20m deep well of diameter 7 m is dug and the earth got by digging is evenly spread out to form a rectangular platform of base 22 m xx 14 m. Find the height of the platform.

A 14 m deep well with inner diameter 10 m is dug and the earth taken out is evenly spread all around the well to form an embankment of width 5 m. Find the height of the embankment.

A well of diameter 14 m is dug 15 m deep. The earth taken out of it has been spread evenly to form circular embankment all around the wall of width 7 m. Find the height of the embankment.

A person is standing at a distance of 80 m from a church looking at its top. The angle of elevation is of 45^@ . Find the height of the church.

A man of mass m is standing on a platform of mass M kept on smooth ice. If the man starts moving on the platform with a speed v relative to the platform with what velocity relative to the ice does the platform recoil?

A hypothetical train moving with a speed of 0.6 c passes by the platform of a small station without being slowed down. The observes on the platform note that the length of the train is just equal to the length of the platform which is 200 m . (a) Find the rest length of the train (b) Find the length of the platform as measured by the obsevers in the train .

A flog pole 'h' metres is on the top of the hemispherical dome of radius 'r' metres. A man is standing 7m away form the dome. Seeing the top of the pole at an angle 45^(@) and moving 5 m away from the dome and seeing the bottom of the pole at angle 30^(@) . Find the height of the pole