Four square flower beds of side 1 m 50 cm are dug on a rectangular piece of land 8 m long and 6 m 50 cm wide. What is the area of the remaining part of land?

How many tiles whose length and breadth are 12 cm and 5 cm respectively will be needed to cover a rectangular region whose length and breadth are respectively:

(i) 70 cm and 36 cm

(ii) 144 cm and 1 m.

If the area of a rectangular plot is 144 sq. m and its length is 16 m. Find the breadth of the plot and the cost of fencing it at the rate of ₹ 60 per metre.

The perimeter of a square is equal to that of a rectangle of length 17 m and breadth 11 m. Find the area of the square.