Radha made a picture of an aeroplane with coloured paper as shown in Fig 12.15. Find the total area of the paper used.

Radha made a picture of an aeroplane with coloured paper as shown in figure. Find the total area of the paper used.

Four equal circles are described about the four corners of a square so that each touches two of the others as shown in Fig. 15.38. Find the area of the shaded region, each side of the square measuring 14 cm. (FIGURE)

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 divide the circle into 10 equal sectors as shown in Fig. 12.12. Find : (i) the total length of the silver wire required. (ii) the 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 also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. 15.16. Find: (i) the total length of the silver wire required (ii) the area of each sector of the brooch.

A loop, carring a current i, lying in the plane of the paper, is in the field of a long straight wire with current i_0 (inward) as shown in Fig. Find the torque acting on the loop.

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. 12.23. Find the area of the remaining portion of the square.

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. 12.23. Find the area of the remaining portion of the square.

In a circular table cover of radius 32 cm, a design is formed leaving an equilateral triangle ABC in the middle as shown in Fig. 12.24. Find the area of the design (shaded region).

The boundary line of an irregular lamina, on a graph paper is shown in Fig. Find the approximate area of the lamina. In Fig. , the number of complete squares = 14 The number of squares more than half = 11

An aquarium is in the form of a cuboid whose external measures are 80cm xx 30cm xx 40cm. The base, side faces and back face are to be covered with a coloured paper. Find the area of the paper needed?