The length and the breadth of a rectangle are in the ratio 9 : 5. If its area is 180 m²; the length (longest side) of the rectangle is :

1. 36 m

2. 20 m

3. 10 m

4. 18 m

The adjacent sides of a rectangle are 16 m and 9 m. The length of the square whose area is equal to the area of the rectangle is :

1. 16 m

2. 18 m

3. 12 m

4. 72 m

The perimeter of square with area 169 m² is :

1. 52 m

2. 26 m

3. 39 m

4. 19.5 m²

The area of square with diagonal 10 cm is:

1. 100 cm²

2. 50 cm²

3. 25 cm²

4. 75 cm²