Question

Find side of equilateral if it semi permeter 18 cm

Answer 1

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Here is the solution:

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Find Perimeter:

Perimeter = 2 x Semi-Perimeter

Perimeter = 2 x 18 = 36 cm

Find the length of each side:

Equilateral triangle => all 3 sides are the same

Length of the sides = 36 ÷ 3 = 12cm

Answer: The length of each side is 12 cm

Answer 2

let side is a
then
3a/2=18
or a=(18*2)/3
or a= 12................(ans)