Fill in the blanks:

(i) The perimeter of a closed plane figure is the length of its …..

(ii) The unit of measurement of perimeter is same as that of …..

(iii) If the side of a rhombus is 7 cm then its perimeter is …..

(iv) The area of a closed plane figure is measured in ……

State whether the following statements are true (T) or false (F):

(i) Centimetre is the unit of area.

(ii) The sum of lengths of a polygon is called its area.

(iii) If the side of a square is doubled, then its perimeter is also doubled.

(iv) If the side of a square is doubled, then its area is also doubled.

(v) To find the cost of constructing a road, we find its area.

(vi) To find the cost of fencing a field, we find its perimeter.

The area of the rectangle with length 25 cm and breadth 12 cm is

1. 300 sq. m

2. 74 cm

3. 300 sq. cm

4. 74 sq. cm

If the perimeter of a square is 36 cm, then its area is

1. 6 sq. cm

2. 9 sq. cm

3. 18 sq. cm

4. 81 sq. cm