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.

If the perimeter of a square is 50 cm, then its side is

1. 200 cm

2. 150 cm

3. 25 cm

4. 12.5 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

If the area of rectangular plot is 180 sq. m and its length is 15 m, then its breadth is

1. 12 m

2. 12 cm

3. 60 m

4. 9 m