The perimeter of an equilateral triangle is 45cm. The length of each side is:
1) 10 cm
2) 12 cm
3) 15 cm
4 45 cm
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Answer:
answer is 15(3)
Perimter=sum of all lengths of sides of triangle
⇒ Perimeter =3a {a= side of triangle }
⇒45=3a
⇒a=15cm.
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