1.

The perimeter of a regular polygon is 28 cm and its each side equal to 7 cm. Find the number of sides of the polygon.

Answer»

Perimeter of regular polygon = 28 cm 

Measurement of each side = 7 cm 

Let number of sides in regular polygon is n, then, 

Total length of all sides = perimeter of polygon 

⇒ n × 7 = 28 

⇒ 7n = 28 

= n = 28/7 = 4

∴ Regular polygon has 4 sides only.



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