What is the perimeter of each of the following figures? What do you infer from the answers?
Answer (a)
Side of the square = 25 cm
Perimeter of the square = 4
side = 4
25 = 100 cm
Answer (b)
Length of the rectangle = 40 cm
Breadth of the rectangle = 10 cm
Perimeter of the rectangle = 2(length + breadth) = 2(40 + 10) = 2(50) = 100 cm
Answer (c)
Length of the rectangle = 30 cm
Breadth of the rectangle = 20 cm
Perimeter of the rectangle = 2(length + breadth) = 2(30 + 20) = 2(50) = 100 cm
Answer (d)
Perimeter of the triangle = sum of lengths of all the sides = 30 cm + 30 cm + 40 cm = 100 cm
All the figures have same perimeter.
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