A floral design on a floor is made up of 16 tiles which are triangular, the sides of the triangle being 9 cm, 28 cm and 35 cm (see Fig. 12.18). Find the cost of polishing the tiles at the rate of `50 p\ p e r\ c m^2`.

A floral design on a floor is made up of 16 tiles which are triangular, the sides of the triangle being 9c m ,\ 28 c m\ a n d\ 35 c m (See Figure). Find the cost of polishing the tiles at the rate of 50\ p a i s e\ p e r\ c m^2 .

Find the area of a triangle hose sides are 9c m, 12 cm\ a n d\ 15\ c mdot

A hemispherical bowl made of brass has inner diameter 10.5cm. Find the cost of tinplating it on the inside at the rate of Rs. 4 per 100\ c m^2

The floor of a building consists of 3000 tiles which are rhombus shaped and each of its diagonals are 45 cm and 30 cm in length. Find the total cost of polishing the floor, if the cost per m^2 is Rs 4 .

The floor of a building consists of 3000 tiles which are rhombus shaped and each of its diagonals are 45 cm and 30 cm in length. Find the total cost of polishing the floor, if the cost per m2 is Rs 4.

In a temple there are 25 cylindrical pillars. The radius of each pillar is 28cm and height 4m. Find the total cost of painting the curved surface area of pillars at the rate of Rs. 8\ p e r\ m^2

The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of R s\ 7. 50\ p e r\ m^2dot

A cylindrical pillar is 50cm in diameter and 3.5m in height. Find the cost of painting the curved surface of the pillar at the rate of Rs. 12. 50\ p e r\ m^2dot

Length of a class room is two times its height and its breadth is 1 1/2 times its height. The cost of white-washing the walls at the rate of R s .1.60\ p e r\ m^2 is R s .179.20. Find the cost of tiling the floor at the rate of R s .6.75\ p e r\ m^2

Length of a class room is two times its height and its breadth is 1 1/2 times its height. The cost of white-washing the walls at the rate of R s .1.60\ p e r\ m^2 is R s .179.20. Find the cost of tiling the floor at the rate of R s .6.75\ p e r\ m^2