Question

Sides of an equilateral triangle is 6 cm, then its SEMI-PERIMETER is________. ​

Answer 1

Answer:

9cm

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Answer 2

Answer:

9cm

Step-by-step explanation:

Given,

side of the equilateral triangle(a) = 6cm

we know that,

perimeter of the equilateral triangle (p) = 3a

semi-perimeter means half the perimeter

so, here

semi-perimeter of the equilateral triangle (s) = p/2 = 3a/2

⇒s = 3a/2

⇒s = 3(6)/2

⇒s = 18/2

⇒s = 9

∴semi-perimeter of the equilateral triangle is 9cm

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