Find the perimeter of each of the following figures :

We are known that a figure's perimeter is equal to the sum of its sides.

(a) Perimeter = 1 + 2 + 4 + 5 = 12 cm

Therefore, the perimeter is 12 cm.

(b) Perimeter = 23 + 35 + 35 + 40 = 133 cm

Therefore, the perimeter is 133 cm.

(c) Perimeter = 15 + 15 + 15 + 15 = 60 cm.

Therefore, the perimeter is 60 cm.

(d) Perimeter = 4 + 4 + 4 + 4 + 4 = 20 cm.

Therefore, the perimeter is 20 cm.

(e) Perimeter = 1 + 4 + 0.5 + 2.5 + 2.5 + 0.5 + 4 = 15 cm

Therefore, the perimeter is 15 cm.

(f) Perimeter = 4 + 1 + 3 + 2 + 3 + 4 + 1 + 3 + 2 + 3 + 4 + 1 + 3 + 2 + 3 + 4 + 1 + 3 + 2 + 3 = 52 cm.

Therefore, the perimeter is 52 cm.