A square and a rectamgular field with measurements as given in the figure have the same perimeter.Which field has a larger area?

In the given figure , the magnetic field at 'O'.

Which of the following has a magnetic field like that of a bar magnet ?

Describe how the two figures below are alike and how they are different.Which box has larger lateral surface area?

The diagonal of a rectangular field is 60 metres more than the shorter side. If the longer side is 30 metres more than the shorter side, find the sides of the field. OR Sum of the areas of two squares is 468m^(2) . If the difference of their perimeters is 24m, find the sides of two squares.

Parallelogram ABCD and rectangle ABEF are on the same base AB and have equal areas. Show that the perimeter of the parallelogram is greater than that of the rectangle.

Two long straight wires are connected by a circular section that has a radius r as shown in the figure . All segments of the wire lie in the same plane and carry steady current I . The magnetic field at centre O of the circular segment is