Show that all rectangles with a given perimeter, the square has the maximum area.

Prove that of all rectangles with given area square has minimum perimeter?

The length of a rectangle is 10 centimetes more, than its breadth and its area is 144 square centimetres. What are the length and breadth?

Among an equilateral triangle, a square, a regular hexagon and a circle, all with the same perimeter, which has the largest area?

The perimeter of a square is 14 metres. What is its area?

Draw a rectangle of perimeter 15 cm and sides are in the 3:4 .

Draw a rectangle of perimeter 18 cm and sides are in the ratio 3:2.

In writing the equation to construct a rectangle of specified perimeter and area, the perimeter,was wrongly written as 24 instead of 42.The length of a side was then computed as 10 metres.What is the area in the problem?What are the lengths of the sides of the rectangle in the correct problem?

'Draw a rectangle of length 4 centimetres and breadth 2 centimetres. Draw a square having, the same area of the rectangle.

Of four equal equilateral triangles, two are cut vertically into halves and two whole are put together to make a rectangle: If a side of the triangle ls 1 metre, what is the area and the perimeter of the rectangle?