Question

A perimeter of a regular pentagen is 100 cm. How long is
its each side?​

Answer 1

Answer:

20cm

Step-by-step explanation:

Because a Pentagon has 5 sides so 100÷5=20cm

Answer 2

Perimeter = 100

no. of sides = 5

each side = 20 cm

Extra Related Ques :-. if 100 cm sq is area find side

regular Pentagon area = 1/2 × apothem × perimeter

A×P = 200

A×S= 40

as, P = 5S

angle of each triangle = 72

angle from bisector = 72/2 = 36

Tan 36 = 0.7265

S/2A = 0.7265

S = 1.453×A

Puting this in earlier eq.

A²×1.453 = 40

A² = 27.527

A = 5.246

S = 1.453 × 5.246 = 7.62387 cm

Hope it Helps

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