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 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 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).

A solid is composed of a cylinder with hemisphere ends. If the whole length of the solid is 104 cm and the radius of each of its hemisphere end is 7 cm, find the cost of polishing its surface at the rate of ₹ 10 per dm^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 2.1 m and 4 m respectively and the slant height of the top is 2.8 m, find the area of the convas for making the tent. Find the cost of convas of the tent at the rate of ₹ 500 per square meter.

A sector from teo concentric circle is shown in Fig.14.If the radii of the circles are respectively 3.5 cm and 7 cm,find the area of the shaded region in the figure.

Find the areas of the circle of radius 3.458 cm upto correct significant figures.

A tent is in form of a cylinder of diameter 4.2 m and height 4 m surmounted by a cone of equal base and height 2.8 m. Find the capacity of the tent and the cost of canvas making the tent at ₹ 100 per square meter.

A company packages its milk powder in cylindrical container whose base has a diameter of 14 cm and height 20 cm. Company places a label around the surface of the container (as shown in the figure). If the label is placed 2 cm from top and bottom, what is the area of the label.

A wooden article was made by scooping out a hemisphere from each end of a solid cylinder,as shown in Fig.13.11.If the height of the cylinder is 10 cm,and its base is of radius 3.5. find the total surface area of the article.