The area of a square is 1764 cm² . The length of a rectangle is 4/7 of the side of the square and breadth of the rectangle is half its length. What is the perimeter of the rectangle?

The radius of a circular wheel is 1.75 m. The number of revolutions it will make in travelling 11 km is (use  );

If a regular polygon has 5 sides then the measure of its interior angle is greater than the measure of its exterior angle by how many degrees? 

The ratio of the area of a square to that of the square drawn on its diagonal is :

The perimeter of a rhombus is 100 cm, if one of its diagonals is 14 cm. Then the area of the rhombus is 

The base of a triangle is 15 cm and height is 12 cm. The height of another triangle of double the area having the base 20 cm is

The area of a rhombus is 216 cm² and the length of its one diagonal is 24 cm . The perimeter ( in cm ) of the rhombus is 

A goat is tied with a 10.5 m-long rope to one corner of a plot which is in the shape of an equilateral triangle each side of which is 16 m long. Find the area that the goat can graze on.