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

Explanation

(a)Perimeter of square =` 4 xx side= 4xx25 =100cm`
(b) Perimeter of rectangle = `2 (40 + 10)= 2 xx 50 = 100 cm`
(c) Perimeter of rectangle=`"2(Length + Breadth)"`
`= 2 (30 + 20)= 2 (50)= 2 xx 50`
`= 100 cm`
(d) Perimeter of triangle=`30+30+40=100cm`
After determining the perimeters we observe that all the figures have same perimeter.