Question

The perimeter of decagon is 30m. Determine the length and breadth of its side​

Answer 1

Length of a Side is 3 m

Step-by-step explanation:

We know that,  

For any closed of a given length of one of a side.  

• The perimeter of that Figure becomes equivalent to the Product of the Number of sides and length of one of the sides.

or Perimeter of Figure = Length of a Side $\times$ Number of Sides

Now, Applying above rule to the question,

Let 'x' m be the length of one of the sides of the Decagon.

• The Perimeter of Decagon = 30 m
• Number of Sides in a Decagon = 10

Hence,

• The Perimeter of Decagon = Number of Sides $\times$ Length of Side

$30 = 10 \times x$

⇒ $x = \frac {30}{10}$

⇒ x = 3

Hence, Length of its Side becomes 3 m

Length and Breadth of a Decagon are Equal.

Answer 2

Step-by-step explanation:

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