Question

mensuration

the perimeter of a regular pentagon is 100cm. how long is each side?​

Answer 1

Answer:

20 cm.

Step-by-step explanation:

$perimeter \: of \: a \: regular \: pentagon \\ = 5 \: (one \: side \: of \: pentagon) \\ \\ so \\ \: \\ one \: side \: = \frac{perimeter \: of \: pentagon}{5} \\ \\ now \: perimeter = 100cm \: so \\ \\ length \: of \: each \: side \: = \frac{100}{5} = 20cm$

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Answer 2

Answer

20 cm

Explanation:

Let length 1 side of the Pentagon = s

Perimeter of a regular Pentagon = 100cm

Perimeter of a regular Pentagon = 5 × Length of side

⟹ 100 cm = 5 × s

⟹ 100cm/5 = s

⟹ 20cm = s

Each side of the Pentagon is 20 cm long

More:

Polygons can be named according to their number of sides. A polygon has atleast 3 sides.

3- sided - triangle/trilateral

4-sided - quadrilateral

5-sided - Pentagon

6-sided - hexagon .... and so on.

A regular polygon has its all sides equal. That's reason, Perimeter of regular polygon is : Number of side × measure of one side.