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

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

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?

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

From a piece of paper in the shape of a regular hexagon, sectors of circles with the centre at the vertices are removed as shown in the figure. Find the fraction of the vertices are removed as shown in the figure. Find the fraction of the piece of paper left. Also find the perimeter of the piece of paper left in terms of a side of the hexagon

Find the area of the blades of the magnetic compass as shown in figure

Find the area of the flower bed (with semi-circular ends) shown in figure.

Find the area of the shaded field shown in figure.

A uniform magnetic field vecB of magnitude 0.2 T exists in the plane of paper from left to right. A conducting wire, bent in an irregular manner, and carrying a current i , equal to 5A is placed in the plane of paper as shown in figure. Force acting on the wire (in Newton) is

There is a magnetic field acting in a plane perpendicular to this sheet of paper, downward into the paper as shown in the figure. Paticles in acuum move in the plane of the paper from left to right. The path indicated by the arrow could be travelled by

A capacitor is made of a flat plate of area A and a second plate having s stair-like structure as shown in figure. The width of each stair is a and the height is d. Both plates have the same width perpendicular to plane of paper. Find the capacitance of the assembly.