Question

What is the perimeter of a regular pentagon with 4cm sides?

(a) 25 cm (b) 20 cm (c) 30 cm.​

Answer 1

Answer:

(b)20cm

Step-by-step explanation:

Pentagon has 5 sides

and since it is a regular Pentagon ,. its all sides are equal

therefore 4×5 is 20

Answer 2

Answer :

• 20cm is the perimeter of a regular pentagon with 4cm sides

Given :

• The perimeter of a regular pentagon with 4cm sides

To find :

• Perimeter of regular pentagon

Solution :

As we know that,

• Pentagon has 5 sides and all sides of regular pentagon are equal

As we know that,

• Perimeter of pentagon = 5a

where a is sides (4cm Given)

》5a

》5 × 4

》20cm

Hence, 20cm is the perimeter of a regular pentagon with 4cm sides

More Explanation :

• Pentagon is a polygon
• Pentagon has five sides and five angles
• Pentagon is made up of two words (Greek words) which means five angles
• In the regular pentagon, the interior angle is 108⁰ and exterior angle is 72⁰
• Pentagon has five edges and five vertices