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# The perimeter of a regular pentagon is 100 cm. How long is its each side?

**Solution:**

We will use the formula for the perimeter of a regular pentagon which is given by 5 × side.

A regular pentagon has five sides o equal measures.

Perimeter of regular pentagon = 100 cm

Each side =?

Perimeter of regular pentagon = 5 × side

⇒ 5 × side = 100 cm

⇒ side = 100 / 5 = 20 cm

Therefore, each side of the regular pentagon is 20 cm.

NCERT Solutions for Class 6 Maths Chapter 10 Exercise 10.1 Question 10

## The perimeter of a regular pentagon is 100 cm. How long is its each side?

**Summary:**

The side of a regular pentagon with a perimeter of 100 cm is equal to 20 cm.

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