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  );

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.

The diagonal of a rectangle is 17 cm long and its perimeter is 46 cm. Find the area of the rectangle.

The circumference of a circle is 792 m. What will be its radius?

The cost of levelling a ground in rectangular shape for a proposed garden at 80 paise per square meter is Rs.132 and the cost of fencing the same along its perimeter is Rs.78 at Rs.1.50 per meter. If the garden is extended in rectangular shape with its sides as cubes of the originally proposed garden, what will be the perimeter of the garden after extension?

if one of the interior angles of a regular polygon is times of one of the interior angles of a regular decagon, then the number of diagonal of the polygon is.