The length of a rectangular field is twice its breadth. Jamal jogged around it four times and covered a distance of 6km. What is the length of the field?

Avneet buys 9 square paving slabs, each with a side of m. He lays them in the form of a square.

(a) What is the perimeter of his arrangement [Fig. (i)]?

(b) Shari does not like his arrangement. She gets him to lay them out like a cross. What is the perimeter of her arrangement [Fig. (ii)]?

(c) Which has greater perimeter?

(d) Avneet wonders if there is a way of getting an even greater perimeter. Can you find a way of doing this? (The paving slabs must meet along complete edges, i.e., they cannot be broken)

What is the perimeter of each of the following figures? What do you infer from the answers?

A piece of string is 30 cm long. What will be the length of each side, if the string is used to form:

(a) A square?

(b) An equilateral triangle?

(c) A regular hexagon?

Find the cost of fencing a rectangular park of length 175 m and breadth 125 m at the rate of Rs.12 per metre.

The perimeter of a regular pentagon is 100 cm. How long is its each side?

Find the cost of fencing a square park of side 250 m at the rate of Rs. 20 per metre.

Find the side of the square whose perimeter is 20 m.

Find the perimeter of a regular hexagon with each side measuring 8 m.

Find the perimeter of each of the following shapes:

(a) A triangle of sides 3 cm, 4 cm and 5 cm.

(b) An equilateral triangle of side 9 cm.

(c) An isosceles triangle with equal sides 8 cm and third side 6 cm.

What is the length of the wooden strip required to frame a photograph of length and breadth 32 cm and 21 cm respectively?