The figure is formed by two circles. Find the total area of the shaded parts (Take $\mathrm{\pi }=3.14$)

The figure is formed by two identical semi-circles in a rectangle. Find the area of shaded parts. (Take $\mathrm{\pi }=3.14$)

The figure is made up of two identical rectangles. Find the area of the shaded part:

What is the area of the shaded parallelogram in the given figure?

A rectangular room can be partitioned into two equal square rooms by a partition $7 metres$ long. What is the area of the rectangular room in square metres?

A park, square in shape has a $6 metre$ wide road inside it running along its sides. The area occupied by the park is $1764 square metres$. What is the perimeter along the inner edge of the road?

A swimming pool of $25 m by 10 m$ has a concrete border. Find the perimeter of outside the concrete border if it is $5 m$ wide at each of the sides and $2.5 m$ at the top and bottom.

A room has a height of $3 m$ and a rectangular floor of $6.5 m by 5 m$. The cost of painting per square metre of the walls of the room is $₹7$. Find cost of painting the four walls.

 The diameter of a wheel is $28 cm$. Find the number of complete revolutions it makes to travel a distance of $92.4 m$.