A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire is also used in making 5 diameters which divided the circle into 10 equal sectors as shown in Fig. 5.12. Find : area of each sector of the brooch

A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire is also used in making 5 diameters which divided the circle into 10 equal sectors as shown in Fig. 5.12. Find : the total length of the silver wire required.

Two concentric circles of radii 3.5 cm and 7cm form a sector as shown in the figure. Find the area of the shaded region.

From each corner of a square of side 4 cm a quadrant of a circle of radius 1 cm is cut and also a circle of diameter 2 cm is cut as shown in Fig. 5.23. Find the area of the remaining portion of the square.

A circus tent is made of canvas and is in the form of a right circular cylinder and a right circular cone above it. The diameter and height of the cylindrical part of the tent are 126m and 5m respectively. The total height of the tent is 21m. Find the total cost of the canvas used to make the tent when the cost per m^(2) of the canvas is Rs. 15.

In given fig, O is the centre of a circle. If the area of the sector OAPB is (5)/(36) times the area of the cicle, then find the value of x.

Fig. 5.3 depicts an archery target marked with its five scoring regions from the centre outwards as Gold, Red, Blue, Black and White. The diameter of the region represent Gold scor is 21 cm and each of the other bands is 10.5 cm wide. Find the area of each of the five scoring regions.

Shazli took a wire of length 44cm and bent it into she shape of a circle. Find the radius of that circle. Also find its area. If the same wire is bent into the shape of a square, what will be the length of each of its sides? Which figure encloses more area, the circle or the square? (Take pi=22/7)

A hand fan is made up of cloth fixed in between the metallic wires. it is in the shape of a sector of a circle of radius 21cm anf of angle 120^@ as shown in the figure. calculate the area of the cloth used and also find the total length of the metallic wire required to make such a fan.