Question

A closed shape has 20 equal sides and one of its side is 3cm. Find its perimeter with formula ​

Answer 1

Answer:

perimeter = 60cm

formula will be perimeter=no.of sides×length of side iff length of all side is equal.

Answer 2

A closed shape's perimeter is  60 cm.

Perimeter = Number of side×Length of each side

Step-by-step explanation:

Given data

• Here is given a regular polygon. In regular polygon have all side in equal length.

• In other words we can say that length of all side are equal in regular polygon.

• Number of side (N) = 20

        Length of each side (L) = 3 cm

• So

        Length of N side = N×L

        Length of 20 side = 20×3

        Length of 20 side = 60 cm

• Above value is given length of N side which is nothing but it is value of perimeter.

• So

        Perimeter of closed polygon = 60 cm

• We can also calculate by formula

• Perimeter of polygon = Number of side× Length of each side