Arithmetic Questions And Answers :: Area: part2

1.A rectangle has 15 cm as its length and 150 cm2 as its area. Its area is increased to 1 times the orginial area by increasing only its length. Its new perimetrer is:

2.Area of four walls of a room is 77 square metres. The length and breadth of the room are 7.5 metres and 3.5 metres respectively. The height of the room is:

3.Area of a square hectare. The diagonal of the square is:

4.A rectangular lawn 60 metres by 40 metres have two road each 5 metres wide running in the middle of it one parallel to length and the other parallel to breadth. The cost of gravelling the roads at 60 paise per sq. metre is:

5.The area of a rectangle 144 m long is the same as that of a square having a side 84 m long. The width of the rectangle is: