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.

Split the following shapes into rectangles and find their areas. (The measures are given in centimetres):

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 ……