Question

Question 16

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

Answer 1

a) Length of the side of the given square = 25 cm

Perimeter of the square = 4$\times$side.

= 4$\times$25 = 100 cm .

b) Length of the given rectangle = 40 cm.

Breadth of the given rectangle = 10 cm.

Perimeter of the rectangle = 2$\times$(length + breadth).

= 2$\times$(40 + 10).

= 2$\times$50.

= 100 cm .

c) Length of the given rectangle = 30 cm.

Breadth of the given rectangle = 20 cm.

Perimeter of the rectangle = 2$\times$(length + breadth).

= 2$\times$(30 + 20).

= 2$\times$50.

= 100 cm.

d) Perimeter of the triangle = Sum of all sides.

= 30 cm + 30 cm +40 cm.

= 100 cm.

Thus, all the figures have same perimeter.