A well whose diameter is 7 m, has been dug 22.5 m deep and the earth dug out is used to form an embankment 10.5 m wide around it. Find the height of the embankment.

A well of diameter 4 m is dug 14 m deep. The earth taken out is spread evenly all around the well to form a 40 cm high embankment. Find the width of the embankment.

A 20 m deep well with diameter 7 m 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 well of diameter 3 m is dug 14 m deep.The earth take out of its has been spread evenly all around it in the shape of a circular ring of width 4 m to form an embankment.Find the height of the embankment.

A well of diameter 3 m is dug 14 m deep.They earth taken out of it has been spread evenly all around it to a width of 4 m to from an embankment. Find the height of the embankment (Use... pi=22/7 ).

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

There is an agriculture field in the form of rectangle of length of 20 m and width 14 m. A 10 m deep well of diameter 7 cm is dug in a corner of the field and the earth taken out of the well is spread evenly over the remaining part of the field. Find the rise in its level.

There is a path of width 3.5 m around the circular field of diameter 70m. Find the area of the whole path.

A vertical post of height 5sqrt3 m above the horizontal ground casts a shadow of length 15 m on the ground.Find the angle of elevation of the sun.

A path of 7m width runs around a circular park whose radius is 18m . Find the area of the path.

A person can see clearly upto 2.5 m. Find the type and the power of lens that should be used so that he can see upto 10 m clearly.