Find the area of all possible rectangles whose sides are only whole numbers, given that the perimeter of the rectangels is 18 cm.

Find the areas of all possible rectangles whose sides are only positive integer values, given that the perimeter of each of the rectangles is 18 cm.

Find the area of an equilateral triangle whose side is a cm.

Find the area of a triangle whose sides are 18 cm, 24 cm and 30 cm.

Find the perimeter of a square whose side is 5cm.

Find the length of the diagonal of a rectangle whose sides are 12cm and 5cm.

Find the area of a rectangle whose length is 5 m more than 4 times its breadth, and its perimeter is 60cm.

Find the length of the diagonal of a rectangle whose sides are 21 cm and 20 cm.

Find the Area of a rectangle whose length is 25 cm and breadth is 18 cm.

The sides of a rectangle are x and y, respectively. Find the rule for finding the perimeter of the rectangle.

Find the area of a square whose side is 5cm.