Question 10
The perimeter of a regular pentagon is 100 cm. How long is its each side?
The perimeter of a closed figure is the length of its boundary.
Given: Perimeter of regular pentagon = 100 cm.
⇒ 5 × Length of each side = 100 cm.
⇒ Length of each side = 1005 = 20 cm.
Thus, the length of each side of regular pentagon is 20 cm.