1. Perimeter of a square =

2. Perimeter of a rectangle of length Z and breadth 6 is

3. Area of a square =

4. Area of a rectangle of length l and breadth b is

5. Area of a parallelogram =

6. Area of a triangle =

7. The circumference of a circle of radius r is

8. The circumference of a circle of diameter d is

9. If r and d are the radius and diameter of a circle respectively, then

10. The area of a circle of radius r is