A round table cover has six equal designs as shown in Fig.12.14.
If the radius of the cover is 28 cm,find the cost of making the designs at the rate of `Rs.0.35 percm^2`(use `sqrt3=1.7)

A round table cover has six equal designs as shown in the figure. If the radius of the cover is 28cm . Find the cost making the design at the rate of 3.50 per cm^2 .

A tent is in the shape of a cylinder surmounted by a conical top.If the height and diameter of the cylindrical part are 2.1m and 4 m respectively,and the slant height of the top is 2.8 m,find the area of the canvas used for making the tent.Also find the cost of the canvas of the tent at the rate of Rs.500 per m^2 (Note that the base of the will not be covered with canvas).

The area of an equilateral triangle ABC is 17320.5cm^2 .With each vertex of the triangle as center,a circle is drawn with radius equal to half the length of the side of the triangle(seeFig.12.28).Find the area of the shaded region.(use pi=3.14 and sqrt3=1.73205 )

A chord of a circle of radius 12cm subtends an angle of 120^@ at the center. Find the area of the corresponding segment of the circle.(use pi=3.14 and sqrt3=1.73 )

A pen stand made of wood is in the shape of a cuboid with four concial depressions to hold pens. The dimensions of the cuboid are 15 cm by 10 cm by 3.5 cm. The radius of each of the depressions is 0.5 cm and the depth is 1.4 cm. Find the volume of wood in the entire stand ( see Fig. 13.16).

In Fig 12,PS is a diameter of a circle whose radius is 6 cm.Two points Q and R are taken on PS such that PQ=QR=RS.Two semicircles are drawn with PQ and QS as their respective diameters as shown in the figure.Find the perimeter and the area of the shaded region shown in figure. (pi=3.14)